Just another dmm4 map. I didn't make this, I just opened the DM3.MAP file released by Romero and deleted almost everything.
If you want to put it on your server, please add a dm3ra.cfg file containing timelimit 3, deathmatch 4 and k_overtime 2 to your /ktx/configs/usermodes directory, so players won't have to set these manually every time. :)
The map can be found here: dm3ra.bsp