Assertion: volcano's vent | /r/HasProperty | figure
Facets:
Source sentences:
text: Fire fountains are spectacular effusions of hot incandescent magma which may rise hundreds of metres above an active vent (figure 9).
text: Crater 1 contained three active vents (figure 2).
text: Vent 1 in crater C1 (figure 29) was a large dome-shaped mound with a summit crater and shallow floor filled with incandescent bombs from other vent explosions.