engineers and guyologi ologgeol worried this isn't done sliding. the risk is evident as you see small rocks tumbling down. there are larger rocks and boulders that could crash down on to the southbound lanes that were unexpectedly closed this morning. the geologist is using flags to track the hill's movement. >> what is done -- he set markers in the slide. he is tracking how much -- if you look at it, you can see a little bit of movement. it's hard over time to see how much of it's rooted. he has sensors in the slide. he is gauging how much of the hill coming down. >> reporter: this hill wiped out two vehicles. an abc 7 news van and a pickup truck earlier week. they don't want to risk a more serious injury or death if it continues to allow traffic to drive past. once again, long detours for anyone trying to go between san jose and the pacific coast. bypass roads are narrow. big trucks can barely make the turn to exit highway 17. drivers backed up in traffic alerted chp they saw this man get out of his car on 17, drink beer and urinate in public. th