Volcanic Lair Entrance
Channels of lava cut through black volcanic rock toward a carved stone doorway, with a narrow bridge crossing one of them. Steam vents glow in the cracks, obsidian pillars flank the entrance, and the ground around it is scorched and littered with bone.

4778 by 3584 pixels, free to use in your games including commercial ones. No account needed to download. Generating your own opens the prompt below in the editor, and new accounts get 3 free maps with no credit card.
Running this map
The bridge is the whole encounter: one square wide, over lava, in front of a door. Heat is a standing cost rather than a hazard to roll for, so decide early whether the party can stand here at all without protection. The bones set expectations without you having to say a word.
The prompt that made it
This is the exact text the generator was given. Change a detail or two and you get a map that fits your table instead of ours, which is the whole reason the prompt is here rather than hidden.
The entrance to a lair built into the side of an active volcano. Rivers of glowing orange lava flow through channels carved into dark volcanic rock. A narrow stone bridge crosses a lava stream leading to a massive carved stone doorway. Steam vents and cracks in the ground glow with heat. Obsidian pillars flank the entrance. Charred bones and scorched earth surround the area. Red and orange lighting from below. Top-down, grid-aligned, battle map style.
Using it in a virtual tabletop
Suggested grid: 20 by 15 squares, 5 feet each
The map is drawn without grid lines on purpose, so you can set your own and have it line up. In Roll20 and Foundry VTT, upload the image, then set the grid to these dimensions and nudge the alignment until the squares sit on the terrain.
The file is a standard image, so it imports into Roll20, Foundry VTT, Owlbear Rodeo and Fantasy Grounds the same way any other map does. It also prints, if your table plays in person. For more maps of this kind, see the dungeon map generator.
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