Jim Tenney posted the route on Turtlehead Peak:

Car to Car. Unsupported, to sign-in book and back.
Starting and ending in Sandstone Quarry turn out off of Red Rock Loop.
This is a very popular route with a big pay off view of Vegas and the surrounding peaks.

Mike Wagner originally submitted the Lower Gulch as an out and back. Jason Hardrath added the following information and variations:

Jason Henrie posted this route, but didn't provide much detail: