Make a run for it towards the cheese, then back to the hole. It is possible to push the ice block off the map to the left. It is also quite common for the ice block to roll over the mice, sliding harmlessly down to the right and off the map. In other cases, mice have gone up to the ice block at the very start of the map and kept jumping so that the ice block slides over them and towards the right and off the map. Sometimes, AFK mice will act as a ramp for the ice block and the other active mice can take cover underneath.
In the rare case that everyone runs and the ice block continues to gain momentum, it is best to run to the right side of the map, consistently wall jumping on the ground, wait until the ice block slides off the map, and then collecting the cheese and going to the hole.
In night mode, it is difficult to see the giant block of ice.
There is only a shaman in the night mode version of this map.
V0.148: The ice block is made bigger and spawns mid-air.