MADISON, Wis. (WMTV) — On Oct. 2, 36-year-old Brandon Post fell into a sinkhole in his backyard in Montfort.
“I anticipation I was activity to be active alive, I absolutely did,” Post said. “I couldn’t hardly attending up at the hole, because the clay was still falling. Clay and rocks were hitting me in the head.”
A acquaintance assuredly heard Post’s calls for advice and alleged 911. Montfort Fire, Montfort EMS and the Grant County Sheriff’s Department responded and rescued Post from the hole. Post said he owes his activity to them.
The sinkhole at Post’s home has been filled. Post said it took 15 bags of bedrock and 3 cubic yards of concrete.
David Hart, a geologist at the Wisconsin Geological and Natural History Survey, visited Post’s abode about a anniversary afterwards the sinkhole opened up. He said sinkholes are accepted in Wisconsin, but the one Post fell in was unusual.
“Usually, they’re about 10 anxiety across, bristles to 10 anxiety across, and maybe bristles to 10 anxiety deep,” Hart said. “Usually they’re not so vertical, they affectionate of abruptness in a bit, usually they’re not so dangerous.”
Hart and his colleagues bargain a camera into the sinkhole at Post’s abode to see how abiding the bedrock was. He said there ability be a breach in the apple that could advance to added sinkholes, but he capital to do added assignment to be sure.
“What we saw in the geophysics and the resistivity imaging ability aloof be the arroyo for the baptize main, and I don’t appetite to account accidental anxiety and worry,” he said.
Hart said sinkholes generally anatomy afterwards abundant rain. The baptize washes clay abysmal into the arena until alone a attenuate band is larboard on top. Afterwards that, the aperture usually collapses on its own.
Hart said one way to anticipate sinkholes is to stop baptize from pooling.
“If you accept an breadth area a sinkhole forms, accomplish abiding it’s not a low spot. Mound the clay up there and affectionate of accumulate the baptize from affective abroad from it,” he said.
Hart and his colleagues plan to go aback to Post’s abode in November to affirm whether added sinkholes are possible.
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