Assertion: volcano's rift zone | /r/CapableOf | empty out shallow magma chamber
Facets:
value: beneath the summit
type: LOCATION
Source sentences:
text: It was created between 1,000 and 1,500 years ago by a large eruption from Mauna Loa's northeast rift zone, which emptied out a shallow magma chamber beneath the summit and collapsed it into its present form.