This is a model based on the “Keep on the Borderlands”, part of the TSR Module B2 “Caves of Chaos” which was included in the ‘basic’ D&D set in 1979.

I modeled it as part of ‘vintage’ series for a current 5e group…

This is uploaded at 2250 x 2500

There is 4000 x 4500 version at https://www.patreon.com/posts/keep-on-b2-64983673