OnyxSkull Caverns (Patreon)

Sometimes a campaign needs a ridiculous skull-shaped dungeon when it is time to delve against some obviously evil foes…

These ominous caves along the Onyx Defiles were claimed by [Insert Ancient Creepy Group] who used magic and the labour of their [Insert Insane Humanoid Followers] to add new structures within, as well as to reshape existing caves into rooms and chambers for their [Insert Dark Practices].

But their worship of [Insert Forbidden / Forgotten Demon-God] brought the attention of the [Insert Order of Good Warriors] who wiped them out, leaving the OnyxSkull Caverns empty, desolate, and moaning with the winds sweeping down the Onyx Defiles. But something so dark and evil doesn’t remain empty long, and the OnyxSkull Caverns have an evil of their own, and seem to birth other evil residents if no one moves in soon.

Today the black doors of the OnyxSkull Caverns have been re-seated, the chambers within home once again to those inimicable to civilization. These [Insert New Evil] are building up in the region, taking over other caves and follies in the Onyx Defiles, with their leadership ensconced within these dungeons.

[Tricky Map Note: The elevated level is shown slightly offset from the level below it. It actually sits roughly 30 feet south (3 squares) from where it is shown on the map, connected to the lower level by stairs where the arrows are shown.]

The 1200 dpi versions of the map were drawn at a scale of 300 pixels per square and are 14,400 x 14,400 pixels in size (48 x 48 squares). To use this with a VTT you would need to resize the squares to either 70 pixels (for 5′ squares) or 140 pixels (for the recommended 10′ squares) – so resizing it to either 3,360 x 3,360 or 6,720 x 6,720 pixels, respectively.

https://dysonlogos.blog/2024/03/25/onyxskull-caverns/