I was in Yosemite Valley today (yes I know, eat your heart out<g>) photographing this rock:

http://www.williamgregory.com/rockreflection.htm

(I didn't take the picture at the above link and no it is not intended as an advertisement.)

Right near where I was standing to take the shot, I found on the ground a lens cap to a Pentax 1 degree spot meter in very good shape considering what it must have gone thru while laying there. Who know how many photographers trudging 8x10's stepped on and over this thing over the years.

If you lost one there and can positively identify it, it's yours. Otherwise It'll go back on my light meter since I lost one along the Merced river a few years ago......

-Mike