. >> park rangers will continue their search today for a california teenager swept over a waterfall at yosemite national park. the 19-year-old was swimming in the river with a 600-foot high nevada fall when he went over the edge. miguel marquez is live at yosemite national park. mikel miguel, what happened? >> reporter: well, we are learning a lot more about exactly how this happenedch he was at nevada fall as you say. i want to show you this is yosemite falls here. it gives you an idea of how rough an beautiful tease falls are. this is about 1,400 feet the one he went off ouf was half this