What an amazing hike! it exceeded my expectations.
The hike is located along Highway 93, south of the Hoover Dam in Lake Mead National Recreation Area, about 45 minutes southeast of Las Vegas.
From town, drive out to Lake Mead NRA, over the bridge into Arizona, and then down to the White Rock Canyon Trailhead.
The hike is easy to moderate 5.5miles or so. There is a fair amount of up and down, and there is some scrambling and there's a good amount of walking through sand & gravel. You will be using the same trail-head as if you are going to Arizona Hot Springs. Instead of entering the slot canyon to the springs, you'll branch off to the right and follow a wash toward an abandoned magnesium mine. We saw an old ore hopper.
Keep following the trail, you approach Liberty Bell Arch, which is a natural erosion of rock that resembles the Liberty bell. The entire hike was filled with beautiful colorful scenery and all kinds of terrain. The arch was grand and impressive.
In the distance, you'll see the new O'Callaghan-Tillman Memorial Bridge that bypasses Hoover Dam. From the arch, continue following the trail as it goes up some ridges as you ascend to the highest point of the hike. The view from here is amazing. Below is the Colorado River separating Arizona and Nevada. It truly is an incredible sight as you look about 1,000 feet below and see boats and kayaks on the river.