So named by Yuri Bolotin, 29th August 2015, as a deep narrow parallel sided passageway has occurred due to a block of great dimensions that has moved out from the cliff face. The glide path is at 45 degrees from the point of detachment, so the passageway is the same width both before and after it has taken a 90-degree turn. Located below the cliff line within Hecates Cauldron.