Assertion: catastrophic erosion | /r/CapableOf | erode hole
Facets:
value: in the sandstone
type: LOCATION
value: beneath the dam.21
type: LOCATION
Source sentences:
text: The spillway was immediately shut down and an inspection revealed catastrophic erosion had cut through the three-foot-thick reinforced concrete walls and eroded a hole 40 feet (12 m) wide, 32 feet (10 m) deep, and 150 feet (46 m) long in the sandstone beneath the dam.21