These photos were shot by one of my co-workers...thanks Kim!
Main wash from a distance; Lava Butte is on the left. It's peak is about 2500 feet above the desert, an old cinder cone. The mountains in the background are totally obscured by fog.
A little closer.
Do you see the striped earth in the back? That's layers of sandstone and lava heaved up by plate techtonics.
We are very seismically active here in Las Vegas, with over fifty fault zones.
Rainwater pouring into the big wash that dumps into the Lake.