User blog:Commado21/Semi Circle Indent?

Okay so I haven't seen anyone post anything about this yet so I thought I'd bring it up. Near the spawn points, along side one of the mountain walls there is an indent in the shape of a semi circle on the wall.

In case you have trouble locating it, the indent is right next to my person in this next photo 

Looking through the wall, there is a little open space with another wall behind it 

Also while looking through the walls for a while, it seems as if there is snow falling, at least thats what I think it is 

Could this possibly be the entrance to the new biome where the trees that inhabit said biome will be chopped by the candy cane axe?