And its SW slopes into Gleann Lichd are seamed for 3 km with trenches reaching 10m high and 800m long, a slope deformation which is the largest'rock slope failure'in the Highlands.
32.
Since the northeastern flank of the Hilina slump is still growing, the sliding southern flank of the slump may be experiencing friction resisting slope failure as the northeastern flank is pushing upwards.
33.
Then in early 1993, after years of drought, " dozens of homes, mostly in Orange and Los Angeles counties, were . . . destroyed or damaged by disastrous slope failures, " they wrote.
34.
If the toe is eroded too far, or the swimming pool begins to leak, the forces driving a slope failure will exceed those resisting failure, and a landslide will develop, possibly quite suddenly.
35.
During the past 11, 000 years, Nevado del Ruiz passed through at least 12 eruption stages, which included multiple slope failures ( rock avalanches ), pyroclastic flows and lahars leading to partial destruction of the summit domes.
36.
Detailed analysis of these deposits suggests that the slope failure did not occur as a single event but a series of smaller failures over a period of hours or days . Local tsunami are likely to have been triggered by these landslides but no evidence has been found to confirm this.
