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Based on the cave work I did for the Descent into the Depths of the Earth tunnels and passages, here are five cave geomorphs that can be used to link up to any existing tunnels. They are all 2 squares wide at the entrances just like the existing encounter area maps for that adventure, so they mesh best with the secondary tunnels but can be used as constrictions in primary passages or widened areas in tertiary tunnels.

Vault of the CaveMorphs!

Vault of the CaveMorphs!

These were my first experiment using a sharpie marker as the foundation of my map drawing – for a number of these geomorphs the outer walls were drawn using a dying marker instead of my usual felt-tipped technical pens. They were drawn using a 07 gel pen for most details and hatching (the same pens I used back when I first started drawing maps), and the sharpie marker for the walls. I used a Squarehex PoGI (Pad of Geomorphic Intent) and drew them while watching “The New Girl” on TV with MissGladiator (and while digging through my Twilight 2000 materials, as you can see in the photo below).

This experiment with a sharpie marker in February (I drew these in February and am finally posting them now? WTH?) is what inspired me to buy a bunch more Sharpies which has lead to my current line of “Daily Doodles” that you can follow along with if you follow any of my social media feeds (on Twitter, FaceBook, or Google+).


The maps on Dyson’s Dodecahedron are released for free personal use thanks to the support of awesome patrons like you over on Patreon. Every month 400 patrons come together to make these releases possible. You can help too in order to keep the flow of maps coming and to improve their quality – and even get a map of your own!