GUATEMALA CITY —
A cavernous and almost perfectly round sinkhole swallowed an entire intersection in Guatemala City during a tropical storm, spooking people in the neighborhood but exciting geologists.
The hole is 66 feet (20 meters) across and plunges nearly 100 feet (30 meters) deep.
Geologists said Tuesday that the circular shape suggested a cave formation underneath, but what exactly caused the sinkhole was still a mystery.
"I can tell you what it's not: It's not a geological fault, and it's not the product of an earthquake," said David Monterroso, a geophysics engineer at the National Disaster Management Agency. "That's all we know. We're going to have to descend."