Massive 'gash' opens near Wyoming's Bighorn Mountains
The crack, measuring about 750 yards long and 50 yards wide, was first discovered on private land by hunters, then reported by hunting company SNS Outfitter & Guides.
"Everyone here is calling it ‘the gash.’ It’s a really incredible sight,” SNS wrote on its Facebook page.
The chasm most likely opened following a long-term landslide, according to Seth Wittke, Wyoming Geological Survey’s manager of groundwater and geologic hazards and mapping.
“A number of things trigger them, moisture in the subsurface which causes weakness in soil or geology, and any process that would weaken the bedrock or unstabilize it somehow,” Wittke said, according to the Powell Tribune.
For a more thorough explanation of the crack's origins, a Geological Survey crew would need permission to examine the area.
“All we have seen is pictures since it is on private land,” said Chamois Andersen, Wyoming Geological Survey’s public information specialist. “It’s hard to assess without someone on the ground looking at it.”
Andersen said "there is some speculation" that the chasm was triggered by "an early, wet, spring and summer."
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“It is not uncommon to have slides like that," Andersen added.
SNS, meanwhile, said that an engineer was allowed to see the crack, offering a similarly rational explanation for the massive opening.
"Apparently, a wet spring lubricated across a cap rock," SNS wrote. "Then, a small spring on either side caused the bottom to slide out. He estimated 15 to 20 million yards of movement."
Randy Becker, one of the hunters who first found the gash, has shared several photographs of the crack on his own Facebook page.