Here is an article on him/his death: http://www.idahostatesman.com/2010/04/23/1164899/death-of-caveman-ends-an-era-in.html
Here is a little video about him and his caves: http://vodpod.com/watch/1105098-yertpod19-diggin-dugout-dick-in-idaho
Call me crazy, but I am sad that I am just now learning about him. If he were still alive, I would love to go spend a few days up there.
What an awesome dude!