This is a small petroglyph site out in the Mojave desert near the larger and more well-known Black Canyon and Inscription Canyon petroglyph sites. The site is at a choke point where a wash comes through a gap in the hills.
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St. George Mine

U2 Joshua Tree
I found what I was looking for... The famous U2 Joshua Tree. It fell over many years ago and now is a shrine to the band and the album. It is surprisingly easy to reach and not in Joshua Tree National Park.
Directions
Getting There
To get to the U2

Millspaugh
Millspaugh was a small family mining camp settled in the late 1890s. According to the writings of Elizabeth Mecham, the first mill burned in 1902 but was immediately rebuilt with metal siding. Most of the buildings were hauled off in 1914.