Yosemite in late September 2006. Trip started at Tenaya Lake trail head then overnight at some lake that I dont have the name of because the map we were using was made in the 50s and at that time this lake had no name. The next day hiked from that lake to Clouds Rest and back. On the top of Clouds rest we were looking at the map and I was changing camera lenses, a gust of wind came and almost blew the map off. When I reached to get the map I knocked my 28-80 lens over and I barly got a hold of it before it went off the edge, it was about 2 ft from a 4000 ft drop.