The vonbings_proving_grounds.rar file you have requested: Maps Levels Missions / Multiplayer / 4 Player / U to V Titles / VonBing's Proving Grounds - 362.91kb is not available. Perhaps try browsing all files for the game C&C3: Tiberium Wars and upload any files you want to share or are missing. This is the only information we could locate:
For more information on Command & Conquer, visit Commandandconquer.filefront.com This is a 4 Player 2v2 map featured in a desert environment. It has a canyon going through the middle of the map, separating both sides.