In essence, the northern flank of the mountain experienced a landslide, exposing the magma chamber to the surface.
(the northern flank of the mountain; experienced; a landslide; exposing the magma chamber to the surface; L:In essence) Context(the northern flank of the mountain experienced,List([12, 58))):(the northern flank of the mountain; experienced a landslide exposing; the magma chamber; to the surface)
the northern flank of the mountain experienced,List([12, 58))
the northern flank of the mountain the northern flank of the mountain
experienced experienced a landslide exposing
a landslide exposing the magma chamber to the surface L:In essence
the magma chamber to the surface