Canadian Rockies - Johnston Canyon, Millennial Rocks

Had to get this one in because it reminded me so much of the picture below, captured in Greece in 2009:

In both you can see that the rock has been worn down to a smooth shine as a result of millions of footfalls over (perhaps) hundreds of years in the top pic and (definitely) thousands of years in the bottom pic.  To be more specific, the second picture was shot on the way to the top of the Aereopolis, where Paul preached his sermon almost two millennia ago.  The dog hasn't been there quite that long...