The Midnight Valley is a rift valley (circled in red) running parallel to the northwest coast of the equatorial continent, within the territory of Tanha Brah. The valley floor is below sea level, but separated from the Dorian Sea by the Sawtooth mountains. There are flash floods in the spring with glacial melt from the high Peace Range to the north. The flood waters drain into the subterranean cavern system at the southern terminus of the valley, in the area of the ancient stoneworks and wall.
The name Midnight Valley alludes to the perpetual mist and darkness within the valley, and superstitions surrounding the cave systems, which have only been partially explored. A quarantine has been maintained around the Midnight Valley for centuries, and was recently re-affirmed in a close plebiscite by the local human population under the auspices of the sovereign Tanha Brah. The reason for the quarantine is a common belief that Preta access the surface of Brahma from the valley floor, a belief based on ancient lore that is contested by Educators, and merchants.
The quarantine of the Midnight Valley effectively isolates the Sawtooth mountains and coastline from the rest of the sovereign territory. An ongoing territorial dispute over the Dorian chain of islands lying off the coast compounds the isolation of this region. Due to this isolation the region has become a sanctuary for species that are now rare in other territories, such as the Chimera and the large Ghost Mantis.
The top view is looking northwest near the southern terminus. It shows the difficult decent into the valley, and the the broad sedimentary flood plain on the valley floor.