The sniper_valley.zip file you have requested: Maps Levels Missions / Conquest Maps / S to T Titles / Sniper Valley - 6.64mb is not available. Perhaps try browsing all files for the game Battlefield Vietnam and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Battlefield Vietnam, visit Battlefieldvietnam.filefront.com A custom map for BFV that is pretty much what the title says. A valley map filled with sniping locations.