The obs_dm001_v09a.zip file you have requested: Maps / Multiplayer / Outpost Alpha - 2.4mb is not available. Perhaps try browsing all files for the game Doom III and upload any files you want to share or are missing. This is the only information we could locate:
A simple multiplayer map supporting eight players, set, loosely, in an environment resembling a military outpost. This map is my FIRST map evertherefore, no garantee on stability is given.