Back in version 0.27.169.33g and earlier (including the 2D releases), there were undead ruins that could take one of several shapes.
There are 2 comments for this map series, last post 2012-03-03
No points of interest found.
Ancient Ruin Type 3
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Don't have Flash?
You can download the compressed map file:
2012-02/quietust-ruin_pyramid.fdf-map
but you will need the .NET version of
SL's DF Map Compressor
to convert to the .PNG image format.
Submitted by: Thar - 2012-02-28 to 1050
Interesting ò.ó
I had never seen.
Submitted by: Quietust - 2012-03-03 to 1050
At one point, it was implied that v0.34's human Tombs were going to take on this shape, but this has since been found to be not the case.