Scientists are studying how exactly the giant, cylindrical Guatemala sinkhole was formed, and how to prevent more. Meanwhile, the US is joining relief efforts to help the thousands left homeless by Tropical Storm Agatha.
At 66-feet wide and 100-feet deep, the almost perfectly cylindrical hole so far has left more questions than answers.
"I can tell you what it's not: It's not a geological fault, and it's not the product of an earthquake," David Monterroso, a geophysics engineer at Guatemala's National Disaster Management Agency, told the Associated Press. "That's all we know. We're going to have to descend."
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