2024-02-25, 12:20 PM
Wow, really neat stuff. That dry lake you visited is formed by the Northern Death Valley fault, one of the largest in California! Last major earthquake in the area was probably about 2,000-2,200 years ago, so if those cairns are anywhere between Furnace Creek and Last Chance Canyon, it's not unreasonable to say they are at least that old and possibly toppled by said earthquake.
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And my out-of-date website dvexplore.blogspot.com