CTF-1on1-Viper is a Capture The Flag map for Unreal Tournament 2004 released by Pandemonium.
Image may be NSFW.Clik here to view.

An old structure with two bases separated by a small common area in the center. In the spirt of "Thorns" maps, but with much more attention to detail. Small enough to hold no more than 4 players comfortably. An "InvertedPlayerstarts" Mutator (made by myself) is also included in the zip-file that will reverse the spawn points so that you begin in the enemy's base.