Went on a hike today here in Nevada. We went to Red Rock National Park. The particular trail we decided to do was the Calico Tanks, from the Sandstone Quarry turn-off. It's rated "moderate", but this hike pretty much kicked our asses. There was a number of places where you had to scramble up some huge rock formations.
Anyway, there is a bit of a payoff at the end of the hike. There's a pool created on the sandstone from a combination of precipitation and springs. Apparently even in the midst of summer there's always some water there. There's also a pretty impressive view of the Las Vegas valley on the other side of the pool.