
There is a river that dips underground through a low-ceilinged cave before descending fairly gently under the grey hills to depths unknown. However, all it takes is a magic spell to lower the water level at the cave entrance to make this easily navigable by boat, as the river cave has a fairly high ceiling after the entrance…
Unlike my other ongoing megadungeon (the Tekumel Undercity maps), the Heart of Darkling series is being released for commercial use as the maps are drawn. The goal of the project is to produce 20 maps that are all tied together by a single underground river and lake.
- Heart of Darkling Map 1A – The Demon’s Bridge
- Heart of Darkling Map 1B – The Demon Halls
- Heart of Darkling Map 2A – The Waystation
- Heart of Darkling Map 3A – Swiftwater Monastery
- Heart of Darkling Map 4A – The Weeping Outpost
- Heart of Darkling Map 5A – The Bandit Tower
- Heart of Darkling Map 6A – The Cove of Coals
- Heart of Darkling Map 7A – The Augite Shore
- Heart of Darkling Map 8A – The Hags
- Heart of Darkling Map 9A – Shrines of Silver
- Heart of Darkling Map 10A – DiTullio Islands
- Heart of Darkling Map 11A – Bloodmarket Cave
- Heart of Darkling Map 12A – Darkling Galleries
- Heart of Darkling Map 12B – Gibberling Lake
- Heart of Darkling Map 13A – The Drop
- Heart of Darkling Map 13B – Cold Caves
- Heart of Darkling Map 14A – Deception’s Bridge
- Heart of Darkling Map 15A – The Pillars
- Heart of Darkling Map 16A – The Stairs
- Heart of Darkling Map 17A – Darklingtown North
- Heart of Darkling Map 17B – Darklingtown South
- Heart of Darkling Map 17C – Frogsport
- Heart of Darkling Map 17D – East Frogsport
- Heart of Darkling Map 17E – Mushroom Caves
- Heart of Darkling Map 17F – Frog Tower
- Heart of Darkling Map 17G – The Tunnels
- Heart of Darkling Map 17H – Caverns District & Spillways
- Heart of Darkling Map 17I – The Upper Tunnels