andng key principles. >> reporter: among the ten principles of burning man are a reflection of the community ethos, and further include radical inclusion, communal effort, and civic responsi responsibility. burning man began as a picnic on a san francisco beach. 1986, founders larry harvey and jerry james burned a driftwood statue of a man on baker beach, attracting hundreds annually, before moving to black rock desert in 1990. in 1997, "nightline" was on-site speaking with harvey. >> we create just enough water ♪ so that this spontaneous this is "nightline." naturally occurring process called culture, which is born of >> juju: tonight, burning man. the interactions of people, that inside the mass exodus. no one can plan, that no one can control -- they'll begin to after monsoon rains turned the annual gathering in the nevada happen. >> reporter: in 2004, the desert into a giant mud pit -- burning man regional network >> what was miserable were the launched, exporting the culture port-a-potty situations. globally. >> before that time, if you were -- wanted to think of >> juju: celebrities among those yourself as a burner, you had to making an escape. >> we walked three go to black rock city. now you could be a burner anywhere. it wasn't an event, it was a

think five more. >> juju: alongside chris rock and cindy crawford. culture. the principle of radical >> reporter: attendance and attention exploded in the early self-reliance put to the test 2010s when social media and for 70,000 burners. will they be back? superstars turned their eyes toward the desert. >> it's like, you know, not a plus, pain gambling. football season has arrived and massive playground for the rich. online betting is everywhere. >> i'm not going to say the ads in fact, that narrative often creates the problem with the are the reason i did it, but people who really build the city constantly being reminded of it. and participate in it and are >> juju: we update with one teen most involved in burning man, that got hooked to talk about they're rendered invisible. >> reporter: diplo, a burning recovery and relapse. man veteran of 12 years, was one >> gambling grabbed you by the of the first to make it out. throat once again? >> every year, there's something >> yeah. it just sneaks up on you. different. i was up for the adventure. >> juju: the warning from his i had a big crew with me with father about fantasy football and kids. celebrities and regular people, >> in retrospect, we've and we kind of wandered off and normalized it for a lot of made it work for us everywhere we went. people. it might have been okay, in this everywhere we went we got help. case it wasn't. >> reporter: as the tens of spotless wonder. thousands started to make their the zoo asked, thousands way out monday, we made our way in, advised to duct tape our answered. tonight a one-of-a-kind giraffe finally has a name. shoes to navigate the sludge and mud. plastic bags becoming the new ♪ fashion statement for zana and vicks vapostick provides soothing, norris, on their way back to non-medicated vicks vapors. their native lafayette. >> we have to casual an [exhales]

easy to apply for the whole family. international flight. we tried to change the tickets and it was getting way too vicks vapostick and try vaposhower for steamy vicks vapors. expensive. >> reporter: the duo grabbing a $300 tax toy reno, and found (cat 1) friskies world! the purr-fect reminder that... life's more fun in the deep end. alex in ankle-deep mud after (cat 2) yeah! so never stop exploring... helping a fellow burner. always keep it real... >> it was nice of you to stop and help someone. >> that's what you do here. (cat 1) and do whatever floats your boat - >> what's your plan? just like we do. >> the easiest plan in the (vo) feed their fantasy. world, just wait it out. ♪friskies♪ i mean, it's just drying. this was a whole river here. >> reporter: at one point, that jam, five miles long. but burners making the best of it. but not everyone was so zen. >> you've been trying to leave for days? >> yes, days. >> that's why we're unhappy. >> reporter: siblings jared and carley goldberg documenting the rough past few days, watching cars spinning out of the clay. ( ♪ ♪ ) >> we attempted to leave friday at sundown. >> to leave, and it's now 5:00 p.m. monday. we're just getting off the dirt ( ♪ ♪ ) road. >> that's how long it took. >> reporter: today, a breakthrough. >> we made it to bishop, whoo!

>> reporter: they're successfully making their way ( ♪ ♪ ) out of black rock, heading to ( ♪ ♪ ) san diego. >> 7:00 p.m., almost home. >> it put a very, very sour when you find your reason to go on, taste in our mouth, or in my mouth. let it pull you past the doubt. and it's going to make me rethink. past the pain, and past your limits. >> reporter: still, many found no matter what, we go on. deep community -- >> the best urn ever! biofreeze >> reporter: in the chaos. >> in the rain, the mud, it brought a new adventure. best burn ever. i'll be there next year. >> reporter: this year's freak ♪ weather testing the limits of burning man's ethos. >> the first rule of burning man >> juju: thanks for joining us. is, radical self-reliance. for the thousands of burners your job is to make sure you get still trying to get home this in get out with all your equipment, make sure you have year's burning man was a mix of enough to survive. monsoons and mud. if you don't, people are there to help you. the annual gathering is by design a radical experience filled with music and arts >> juju: our thanks to matt. up next, the temptation to that's unapologetically bet on sports. eccentric. but what they may remember most how the rise of online gambling is putting some teens on a crash this year is that mother nature course with addiction. crashed the party with plans of her own. abc's matt gutman is in spanish springs, nevada. i'm jayson. i'm living with hiv and i'm on cabenuva.

>> reporter: in the remote it helps keep me undetectable. desert, a line of cars stretching to the horizon. for adults who are undetectable, cabenuva is the only complete, thousands caught in a slow-motion exodus out of black long-acting hiv treatment you can get every other month. rock lake, capping a sometimes cabenuva is two injections, chaotic final weekend at burning man. given by my healthcare provider, every other month. >> it was like a war zone. it's really nice not to have to rush home >> it was like mad max. and take a daily hiv pill. don't receive cabenuva if you're allergic >> no public announcements, no to its ingredients or if you taking certain medicines, infrastructure, no information, which may interact with cabenuva. no way to call, no way to get serious side effects include news. allergic reactions post-injection reactions, liver problems, and depression. >> horrible. so we -- they shut the water if you have a rash and other allergic reaction symptoms, down. >> many hours of rain. stop cabenuva and get medical help right away. >> reporter: the show called tell your doctor if you have liver problems "burners," attendees at the or mental health concerns, and if you are pregnant, breastfeeding, nine-day event typically filled with parties, deejay sets, or considering pregnancy. some of the most common side effects meditation and art installations, stranded for days include injection-site reactions, due to heavy rain. fever, and tiredness. if you switch to cabenuva, monsoonal rains changed this attend all treatment appointments. lakebed into a mud pit that ready to treat your hiv in a different way? trapped everything. ask your doctor about every-other-month cabenuva. rvs, shoes, people. now the roads have dried out every other month, and i'm good to go. enough that exodus has begun. deborah took videos of the (owner) purina one... we switched and wow! sludge created by the storms.

>> this much mud under our feet. from day 1, its proven natural nutrition every other month, supports charlie's strong immune system... >> reporter: she sent them to a friend. within hours they were featured and ginger's healthy heart. in "the new york times," the (vo) healthy differences today and for a lifetime. "wall street journal," even on german tv. purina one. a difference from day one. >> i'm so famous. which is really funny. my most important kitchen tool? we didn't even know it was picked up by the media until we my brain. so i choose new neuriva ultra. got a text message. unlike some others, >> reporter: all of a sudden the it supports 7 brain health indicators, world became aware that people were trudging around in shopping including mental alertness from one serving. to help keep me sharp. bags at burning man. try new neuriva ultra. don't ask about the toilets. think bigger. >> what was miserable were the (screams) bleeding gums are serious, jamie. port-a-potty situations. dr. garcia? >> actually overflowing? >> they were actually woah. overflowing. they're a sign of bacterial infection. kind of gross. >> you had to wander around and crest gum detoxify's antibacterial fluoride works find one further away. below the gumline to help heal gums and stop bleeding. crest saves the day. >> reporter: 32-year-old leon reese dying amid the aftermath crest. of the monsoons. when you find your reason to go on, that death is still under investigation. at one point on sunday, the let it pull you past the doubt. situation seemed so dire, the white house briefed president past the pain, and past your limits. biden about it. >> walk three miles, i think no matter what, we go on. we've got five more. biofreeze >> reporter: when deejay diplo dipped out of burning man,

leading a group of celebrities, the nation started paying attention. >> sydney crawford, randy gerber, chris rock, austin butler. chris rock was pacing with me. we got to a truck that was stopped," oh, diplo, we love your music." ten of us jumped into the back of the truck and he took us the last two miles. >> reporter: it started friday afternoon when the area was slammed with thunderstorms that lasted into the evening. the monsoons continued on saturday. the fine alkaline lakebed turned into a sticky clay. a driving ban and urging people to conserve food, water, and fuel, and shelter in a warm, safe space. but since this was burning man, a festival where extreme weather is an annual uninvited guest, some embraced the suck, gathering for communal meals. >> here's our camp midmorning, monday morning after four days of perpetual rain. >> here we are out here at the

my brain. so i choose new neuriva ultra. man. >> reporter: and partying till dusk on their art carts. unlike some others, ♪ it supports 7 brain health indicators, >> i have a feeling the people including mental alertness who go to burning man actually from one serving. to help keep me sharp. like a little bit of misery? >> yes. try new neuriva ultra. yeah. >> no, i think the thing is -- i think bigger. think a lot of people like to figure out and solve problems. like building this thing that seems impossible. but you figure out how to build it. >> reporter: but the clay made it impossible to position the security vehicles necessary to set the giant sculpture of a man on fire from which burning man gets its name. so organizers rescheduled it to sunday, and then monday. but by that morning, the mass exodus had begun. >> it's, you know -- everything's new. every year. last year was 110 degrees. whiteouts all week. >> reporter: the weekend thunderstorms coming off the heels of hurricane hilary, drenching the west coast with historic rainfall and causing delays for the start of burning man. the annual gathering in what burners have dubbed black rock city is a full blown popup

metropolis in the black rock desert 120 miles north of reno. >> people are asked not to passively participate, passively consume, but creatively consume. participate actively in art and self-expre self-expression. >> been to burning man before? >> yes. >> reporter: self-described as an experiment in temporary community, the event costs $575 to attend. ♪ but to gain entry, attendees must prove to event staff that they can adequately survive, >> juju: as fantasy football bringing in their own food, leagues are kicking off, it's water, and shelter. ben wax is a house philosophy at easy to see how sports betting and online gambling have exploded into a burning man under the name multibillion-dollar enterprise "caveat magister." in the years since it became >> burning man doesn't have an legal. now easy-to-use websites and advertising department, doesn't apps have popped up, often promise a good time, but it has a survival guide. advertising during sporting people are made well aware, over events. for one teen you're about to and over and over again, of the meet, the temptation cost him conditions that they are going to encounter there and that they dearly. we've altered his voice and his could encounter there, that this name to help hide his identity. is a dangerous environment. >> it usually starts with that huge adrenaline rush that a compulsive gambler is looking for. the quick run where you make a

ton of money, then it's off to the races. >> juju: it's been a rocky road to recovery for the now 19-year-old teenager we're calling steve. >> if you have a phone, you have connection to the internet? you can gamble whenever you want. >> juju: we met him a year ago when he told us about his illegal online gambling addiction he says began at the age of 15. we changed his name and his voice to help hide his identity. >> all it took was playing dice. from there it grew. >> juju: how much did you win? >> couple hundred dollars. that was the first high. >> juju: after three months of rehab and continued work with a gamblers anonymous 12-step program, fresh perspective. you seemed optimistic a year ago. what happened? >> i really felt like i had put it behind me. but what happens is you kind of just slowly start to forget about what had happened and how much you had lost. >> juju: after staying on track, steve says he got swept up in online betting once again. >> it was the temptation of

sports betting. all the ads. i'm not going to say the ads are the reason i did it, gut just constantly being reminded of it. >> juju: online sports betting is now legal and active in 24 states plus d.c., and five more states are being launched this year. >> there's been a lot of focus on the rise of mobile sports betting among young people. essentially creating casinos in every home, on every device. what we're doing is introducing a potentially addictive disorder at a very, very early age. >> juju: the legal age for gambling in the u.s. is 18, or 21, depending on the state and the types of games. but steve says that doesn't stop kids from placing bets. >> they're not like the fan duel and draft kings of the world, they're these little underground, hidden sites that make it easy for someone that is underage that wants to gamble. >> juju: steve says his love of playing basketball and baseball morphed from a sports obsession into a gambling obsession. >> it's not about just watching a sports game.

it's more about watching for the money. >> juju: how did gambling hit your brain? >> i kind of used gambling as an escape from simple things. like boredom, sadness, anger. even my joy. just, you know -- like drugs and alcohol for some people. >> juju: bookies calling him in the middle of school, he says. >> i'm in math class, taking a test. i have my phone calls that i have to worry about, you know. getting this person his money. >> juju: or else? >> right. >> juju: it became a full-time job, isolating him from friends and family, keeping him up all night. he even began stealing money to pay back his debts. when did it first occur to you that your son hadn issue? >> he was clutching his phone while sort of napping. he just started mumbling about college basketball. i actually took the phone to see

what was going on. there was this long string of texts to a colleague of his. and they'd been texting all night long about their bets. >> juju: his father, who we're calling martin, also asked to have his voice altered to help protect his identity. he says at first he and his wife failed to fully grasp how destructive his son's gambling addiction had become. >> it was very difficult to get truthful responses from him, because he was very protective of that behavior. >> juju: what did you miss along the way? what do other parents miss? >> how quickly it became an obsession. >> juju: steve says through it all, his family has been rock solid, taking him to his first 12-step program. but staying sober is no easy task. steve says he briefly relapsed. it sounds almost as though gambling just grabbed you by the throat once again? >> yeah, it -- it just sneaks up on you. that's the best way i can put

it. you can be clean for two months and genuinely believe you're never going to get sucked back into the trap. all it takes is that one split-second where you're offered the chance. >> juju: after the relapse, steve says he's been clean for a month and is starting college where he plans to stay vigilant with his sponsor. what do you do instead of gambling? >> exercising, working out, playing basketball, staying on top of my grades, working on the relationships in my life. >> juju: martin says he himself no longer bets and says, looking back, he wishes he never allowed it in his home. >> we had a fantasy football league. in retrospect, it normalized it to the level we did. which for a lot of people it might have been okay in this case it wasn't. >> juju: experts say because many of these online gamblers have never stepped foot in a brick-and-mortar casino, it's harder to educate about responsible gambling. they warn the increased visibility and acceptance in our

culture could lead to younger exposure and possible addiction down the road. >> we're seeing younger and younger clients presenting for treatment with gambling disorders that previously we'd never seen before. >> juju: we reached out to the american gaming association, who told abc news in part, "the legal gaming industry is committed to protecting young adults through age verification, marketing limitations, and responsible gaming measures." the same cannot be said for the vast illegal offshore gambling market. how easy is it for a teenager to hide that kind of gambling addiction from their parents? >> oh, it's very easy. there's that one addiction that you can't necessarily see or smell on them. you really need the addict to be honest about it. >> juju: how does a parent get a child to be honest about it? >> encourage them that whatever it is that they're dealing with, you're there to listen, you have their back, you're there to support them. >> juju: because your parents have had your back the whole

way? >> absolutely. >> juju: and it's important to note that you are not alone. if you or a loved one is struggling with problems gambling, call the national problem gambling help line at the number on the screen. or ncpgambling.org. help is available 24/7. up next, the name game is officially over. so what are we going to call this extremely rare, adorable spotless giraffe? want luxury hair repair that doesn't cost $50? pantene's pro-vitamin formula repairs hair. as well as the leading luxury bonding treatment. for softness and resilience, without the price tag. if you know... you know it's pantene. sometimes jonah wrestles with falling asleep... ...so he takes zzzquil. the world's #1 sleep aid brand for a better night sleep. so now, he wakes up feeling like himself. the reigning family room middle-weight champion. better days start with zzzquil nights.

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♪ finally tonight, what's in a name? bright zoo in limestone,

tennessee, welcomed a baby giraffe earlier this summer born without any spots. they say she may be the only animal of her kind on the planet. but what to name her? with so much interest, the zoo put the question to the public offering four swahili options. after 40,000 votes, we can report that this rare giraffe will be called "kipekee" which fittingly means "unique." and that's "nightline." watch full episodes on hulu. see you back here same time tomorrow. thanks for staying up with us. good night, america.