Sepulcher is an asymmetrical 4v4 arena map set in a Forerunner installation in a foggy toxic swamp. Originally concepted in Halo 5, the map has seen various changes and iterations during development. A large central structure houses various levels and entrances with long sightlines crossing each other. Two smaller interior spaces branch off from this middle structure, each with a unique layout and connections to the rest of the map. The exterior space surrounding the middle structure consist of various hills, ramps, ledges, and landmarks. Areas like the old hollowed stump, the tower, and the garden all provide different advantages and disadvantages based on the current situation and position of both allies and enemies.