The Winter_Island.zip file you have requested: Maps Levels Missions / Multiplayer / 4 Player / Winter Island - 897.93kb is not available. Perhaps try browsing all files for the game C&C: Red Alert 3 and upload any files you want to share or are missing. This is the only information we could locate:
This 4 player map has each player starting with two ore nodes and two of the players start in the water. Each player has access to an oil derrick and there are additional tech structures and ore nodes placed around the map on this wintery map.