Wow. I remember wanting to do something like this to a fir tree that was in the front yard of the house in Fargo one winter. I thought it would be great if I ran a hose up to the top and let the water freeze and form an ice cave at the bottom. My dad put a stop to that notion when he told me that it would kill the tree. Oops!
These guys wanted a place to climb that was near home so they took it one step farther…
Ice Wall 1