Blood Vale
Achaekek is said to spend much of his time slumbering in the Outer Rifts, bathed in the blood of heretics and worshipers alike. This region is known only as the Blood Vale, a cavern filled with a crimson jungle and interlaced with a network of bloody rivers and swamps. It is said that the River of Souls brushes near to the Blood Vale, which opens from the Great Beyond at the base of the spire that forms Pharasma’s Boneyard; from this vantage point, the Mantis God can watch as those slain in his name travel on to be judged. The Blood Vale is not part of Hell, Abaddon, or the Abyss, though rents in its razor-edged walls open into all three of these planes, providing shortcuts to those realms for those who visit the Vale. Achaekek also keeps dens on other planes, including in Hell’s Avernus, and cracks in these dens are believed to allow the god to travel freely between them.