This map uses Normal Snow. In addition, this map was designed to use a new Ice mechanic that I call Very Slippery Ice.
Very Slippery Ice: When moving on Ice tiles, count movement normally, but for each space, if it is possible to do so, you are forced to move one additional same level space in the same direction you just moved, however this additional move is free. If you can't move one additional same level space, you do not get to keep the free move. The free move cannot be used to go up terrain levels, but it can be used to go down terrain levels. Flying figures are not forced to take the free move if they are flying, except on the space they end their movement on. Ice is now more effective than roads.