Snow Village is a new generated structure added by Better Dungeons. The Snow Village can be found in snowy biomes. It consists entirely of a stone brick Walker village at the bottom and a spire with a redstone beacon at the top.
The staircase must be entered from below the village. There is an entrance from the icy pond. There are a number of generated caves below the beacon with loot. About halfway up the beacon's staircase, there is a hidden lever. If you flip it, there is a secret room next to you that has a few Walkers in it, who will move out to attack you. After killing them, loot the chest in the room for excellent loot.
There is a redstone circuit at the top of the tower that activates the beacon. It will light up three of the lights at once, with a redstone pulse revolving around the tower. Once started, the beacon will continue without any help from the player.