The Nivloc was first discovered in the early 1900s and worked on a small basis by Mr. Colvin (Nivloc spelled backward). In 1937, Desert Silver, Inc. built a 200-ton mill here and worked the mine until 1943. These were the peak years for the mine and during this time it was Nevada’s largest silver producer with 4.6 million ounces of silver and 18,000 oz of gold.
Read next

Barker Dam
It goes without saying that water is important in the desert and in Joshua Tree that is no different.
A rancher by the name of C.O. Barker built the dam around 1902 to improve the natural tank here for his cattle. Along with the nearby Cow Camp reservoir, it

Wall Street Mill
The Wall Street Mill is Joshua Tree National Park’s most intact remaining historic gold stamp mill. Finding a stamp mill like this is rare these days. I’m thankful the NPS has preserved it.
Once owned and operated by renowned prospector and rancher Bill Keys, this two-stamp mill was

Surprise Tank Petroglyphs
We first visited the Surprise Tank Petroglyphs out in the Mojave Desert in 1998. We’ve stopped by a few times since then but didn’t really photograph the site again until 2009. We re-visited the site in 2013, 2018, and 2020. I wanted to get a few more photos