{Dolina Rdzawej Rzeki} — HotA 1.7.1+

Dolina Rdzawej Rzeki, created by Atarosek for Horn of the Abyss 1.7.1 and later, is a small 36 by 36 underground map for two players, with one human slot each and no computer-only colors or teams. Both Red and Blue play as Cove, and the victory goal is to flag every creature dwelling, while a player loses by losing all towns and heroes. Sand, swamp, dirt, and rock make up most of the terrain, with a little water. The map plays at Normal difficulty and includes two towns, four mines, four creature banks, and eighteen monoliths and portals. Wandering stacks of Ogre Mages, Water Elementals, Basilisks, and Battle Dwarves are the most common, and the only dwelling creature is the Air Elemental. The author describes the design as inspired by MOBA games and says it works best in player-versus-player combat.