A nice document detailing some dos and don'ts about mapmaking. These are well thought-out... everyone making maps should read them-there's probably something you haven't considered here.
A circular arena surrounded by a elevated ring. There is a small central hill that is enclosed by another ring that is acessed by jumping from the outer ring. This map sports some very good light sets along with some nice texturing. A fast, KotH map that will also support EmFH.
A set of PICT files for printing that contain all of the Marathon Infinity texture sets and corresponding scenery objects. A great reference tool...