Assertion: seamount's eruption | /r/CapableOf | send pyroclastic flows
Facets:
value: down every valley
type: LOCATION
Source sentences:
text: The climactic eruption of Mount Mazama devastated the terrain for tens of kilometers from the volcano, sent pyroclastic flows as far as 70 km (43 mi) down every valley heading on the volcano, and produced ash fall throughout much of the Pacific Northwest and parts of southern Canada.