Which of the following factors caused some high peaks of the Cascade Mountains of the Pacific Northwest to have high potential for slope failure?

A) they are volcanoes with steep slopes
B) they experience heavy rainfall
C) they may contain loose volcanic ash and other volcanic materials
D) all of these

Cascade Mountains

A major mountain range extending from southern British Columbia through Washington and Oregon to Northern California, known for its scenic beauty and volcanic peaks.

Volcanic Ash

Fine particles of rock and volcanic glass created during explosive volcanic eruptions, capable of being carried long distances by wind.

Slope Failure

The movement and failure of slope materials like soil and rock, often leading to landslides, avalanches, or other forms of mass wasting.