West of the House Range, in unassuming flats, is an enormous sinkhole! The sinkhole, about 25 m in diameter and likely over 25 m deep, is a sight to behold. Legend has it that a local, Joseph Nielson, first noted the sinkhole in 1927. Likely water underground eroded a solution pocket, which caused the sinkhole. The House Range, just to the west, is partially made up of limestone, which is very prone to eroding caves and solution pockets from ground water.

Today, a barbed wire fence surrounds the sinkhole. It is easy enough to climb over the fence for a better look at the sinkhole, but it has very unstable and loose edges. Be sure to stay back from the edge. A fall in would likely be fatal.

Oddly, there appears to be an old wooden ladder at the bottom. I wonder if at some point someone tried to build a ladder to the sinkhole floor? A true oddity of the west desert to visit!