Assertion: caldera | /r/HasProperty | the depression
Facets:
value: atop a volcanic landform
type: LOCATION
value: in the earth
type: LOCATION
Source sentences:
text: A caldera is the depression formed when the edifice collapses INTO the empty magma chamber and the cliffs - surprise, surprise!, represent the eroded ring fracture.
text: A caldera is a depression in the earth that was the site of a volcanic eruption.
text: A caldera is the depression left after an eruption so large the ground surface collapses over a wide area.
text: A caldera is the depression atop a volcanic landform, either active or dormant.
text: A caldera is a depression created when a volcano collapses after the emptying of its magma chamber in an eruption, or the withdrawal of the magma.