As we continue exploring the undercity along the riverbanks, the structures take on a much different feeling. Remnants up here are really that – the remains that didn’t get filled in, but just built over. Things get wetter as river water seeps into these basements and ruins, and of course, sections were sealed off in the process of building the sewers during the last Ditlana.
The largest section of this map is a series of interconnected flooded basements. Pressed down into the riverbanks and unmaintained, these spaces have flooded and have been interlinked by something that lives down here – perhaps ghouls, or something altogether alien that has settled here.

My Private Jakalla Connection Map
This map is relatively isolated from the overall undercity – accessed by wandering down the sewers from map 1R, or through secret doors to the already isolated sections of map 1P. The flooded basements have been sealed off from the surface for a generation or more now, but the moisture seeps up and the housing here suffers from it. The only surface access is a sewer maintenance access on the lower right.
I’m particularly happy with how this section came together. It feels run-down and decrepit – a reminder that there’s a lot of garbage under the city – that the history of the place isn’t all grand temples, cults, and the great clans – but also half-assed construction work, forgotten soggy places, and crumbling debris.
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!