This is a view of Tenaya Canyon from the top of Half Dome. On the lower right you a can see we just started down the cables. The highest peak in the upper center right is called Clouds Rest. An appropriate name as the picture shows. It's about 5000 feet from the summit of Clouds Rest to the bottom of the Canyon. Here's a link for a Clouds Rest hike Jon and I did last year:
http://www.pbase.com/sam_freeburn/clouds_rest_climb_2010