A castle courtyard with a few jumpads. The other player is always in sight, so you have very little chance of any real fun unless this sort of map suits you that is. The .pk3 also includes a Rail Gun version, which is the same with the items moved around.
Could be OK for Rail Gun practice, nothing else really unless you enjoy open boxes.
Tig's notes: Be sure the grab the mapmedia texture pack if you have any missing textures.