. >> reporter: teri bradford of oakland noticed. >> when i looked around i see no one else. >> this entire place. >> reporter: he now plans to keep their history alive by telling others and coming back. >> i feel much more comfortable after hearing what you had to say. >> reporter: as for the buffalo soldiers the national cemetery is the final resting place for hundreds. you'll find their spirits in the rivers, the meadows, the secoyas and the majestic grant it walls. >> reporter: these days yosemite is better known for a different kind of pioneer. because for rock climbers there's really no place on earth quite like this. the weather, the easy access, and the spectacular granite walls. from john muir who in 1869 climbed cathedral peak. the first to free climb the don wall of el captain in 2015. and pushing our limits. >> they are the daredevils. . >> getting pretty rowdy. >> the thrill seekers. >> look at this. >> the true rock stars. >> they think every climber in their heart wants to spend some time in yosemite valleys. >> reporter: once in the park, the sky's the limit. >> everything's