This is ACKS module AX1 which I've chunked into freestanding dungeons all leading to the same basement. We maintain the concept of temple-beneath-ebon- rock-dome on a hillside, but now with a individual entrance per beastman lair.
This area lives in Hex p44.37
Built at the summit of a steep and rocky hill, the various temple structures were once freestanding stone-and-brick. Today, the entire series of structures are buried beneath a dome of black granite dropped by a magical cataclysm. The structures ought to have been destroyed by the impact, but the Gods had placed this location under their protection. As such, the structures are largely intact, though submerged beneath an impressively thick dome of rock soaring 350' overhead.
A detailed map outlining the layout of the various temple edifices around the mountain is available here