Looking for an old map

[OldGuy]

Some time ago, I found a really cool map on here and was recently telling a friend about it. Unfortunately, I can't seem to locate it. I was hoping that someone might recognize the description and know who the artist is or maybe even provide a link.

It is an iso view, cutaway of a hideaway built into a cliff. There were a handful of natural or rough-cut rooms, passages, and stairs. One feature that stood out was an underground river that ran through part of the area and fell through a hole in the floor which gathered into a pool at the base of the cliff and then ran off out of view. A lift was built around the hole where the water fell through in order to bring supplies up from the lower area.

Does that ring a bell with anyone?
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volcano vaporizers