An avalanche boulder tongue is an accumulation of debris produced by snow avalanches. Well-developed avalanche boulder tongues usually develop below avalanche gullies due to successive avalanches over a long time span. The avalanche boulder tongues were first intensively investigated by Anders Rapp in the areas of Abisko and Kebnekaise in Swedish Lappland.
An avalanche boulder tongue is an accumulation of debris produced by snow avalanches. Well-developed avalanche boulder tongues usually develop below avalanche gullies due to successive avalanches over a long time span. The avalanche boulder tongues were first intensively investigated by Anders Rapp in the areas of Abisko and Kebnekaise in Swedish Lappland.