The de_swisswar.zip file you have requested: Maps Levels Missions / DE Maps / S to T Titles / CS: Source: Swisswar Map - 1.74mb is not available. Perhaps try browsing all files for the game Counter-Strike: Source and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Counter-Strike: Source, visit Halflife2.filefront.com Swisswar is a very nice looking and nicely done bomb/defuse map for CS: Source. It primarily contains outdoor environments using default textures. Recommended for up to 32 players.