Booming Ice Chasm - Castle Wildland, AB 

July 9th, 2023.
A natural wonder right here in Alberta. I had already explored the Booming Ice Chasm 7 years ago, so I knew what to expect. But this was the first time for the rest of our crew.
Other than the anchor at the entrance, we didn't use any of the bolted anchors in the cave. We brought 4 ropes to reach the bottom and simply used ice screws for anchors. The polished ice was about 50 degrees at the top and then mellowed to around 35 degrees farther down. We climbed back up the ropes using hand ascenders and progress-capture devices. I was quite happy to have packed in my mountaineering boots as it made the climb up very easy. Bonnie on the other hand struggled a little using boots that were a bit too soft for her crampons.
0:00 The First Cave
0:34 Cliff Traverse To The Booming Ice Chasm
2:20 Booming Ice Chasm Entrance
2:47 The Descent
9:03 At The Bottom
10:46 The Ascent
12:23 Back Across The Cliff Traverse
14:14 The Hike Down