These were at Atlatl rock. I didn't take a picture of the rock itself but these are way off the ground, they've built a staircase that's probably about 3 stories tall to view them. Some are behind glass to decrease the chance of vandalism.
A closeup of the little animal ones:
These unfortunately have some graphiti over top of them:
Part of the rock itself, two large sections sit side by side and almost touch:
Around the corner is this arch rock, the arch is pretty small:
These are at a trail called Mouse's Tank that we visited later in the day. They're carved into this black crud that lines portions of the red rocks in this canyon. I don't know what the black stuff is.
Closeup of one of those horned animals again:
Just a cool rock formation. Lots of them in this canyon:
This is the actual "Mouse's Tank", it's one of those natural tanks that fills up with water in wet seasons. It was dry when we visited, I don't think the rain and snow that had fallen on Las Vegas and Red Rock Canyon had made it here.
I'll be back in a couple of days with some petrified logs and some more trails, so in the meantime, Merry Christmas, and stay tuned for more Nevada fun!