One stream of debris and ash was seen to cascade almost two miles down its western flank.

Intense erosion on the western flank of the mountain has destroyed much of those flanks.

This volcanism occurred mainly at the shield's summit and on its western flank.

One of the lava flows traveled down a 30% to 35% grade over the landslide scar on the western flank.

Later in the 12th century the town developed around the western flank of the castle.