we skinned up cardiac bowl and through a thinner, new snow area in between two pockets of deeper, wind drifted snow. we got a collapse and some cracking near the top of the bowl. a pocket of wind drifted snow was triggered from below by a ski cut (crown at the cliff bands). 25 feet wide x 25 feet length pocket entrained snow and ran about 350 feet. failed at new snow/old snow interface. as shown in the photos, the slide ran and took out part of our skin track. no one caught or carried.