Someone let the Yeti out in Klael’s Dungeon!
When I got there the icy wall was already shattered, the beast standing still.
Could this be the first time in history?
Official server
You can break the wall with a pick.
That simple?! Darm… i tried all sorts of weapons and explosives! 
It’s a relatively new development.
One of the Age of War updates that made it accessable.
Before then, that ice wall might as well have been eldarium.