Champignon de neige / Snow mushroom
making a snow bollard and using it to make an abseil
Lunule pour rappel / Lunula for abseiling
How to make a lunula rappel anchor for descending from an ice route
Ancrages d’assurage / Belay anchors
Belay anchors
the various methods
Coinceurs / Wedges
Wedges, and setting the Wedges