Yellowstone 2013 Excelsior Geyser Crater Path at Sunset
It took a while for everyone to leave and as the sun was going down we were rewarded with this great sunset.  For a moment the light was just perfect. Prismatic Spring is on the left.  Best shots of it appear to be from the hill behind it.   Probably one of the best shots we got in Yellowstone.  
sunset nationalpark yellowstone geology prismaticspring excelsiorgeysercraterpath