Starting Zone
Starting Zone : That portion of an avalanche path where a slide originates. Generally, starting zones are bare of trees, steeper than about 30 degrees and receive large amounts of snow. Gullies and bowls are particularly efficient collectors of snow (especially on lee slopes where wind transport occurs) and the tops of these areas make up a large portion of the most active starting zones. Many starting zones are also bounded by cliffs or rock outcrops
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