Hilltop stones (sometimes referred to by some players as wisp shrines) are a generated structure found in the Overworld. They are composed of a ring of obsidian totem block pillars surrounding a sinister aura node and a loot chest. They are the only locations outside the Nether where wisps can spawn.
Generation[]
Hilltop stones can generate anywhere in the Overworld in any biome; however, they can only spawn at Y-coordinates of 85 or greater and must spawn on a patch of stone, dirt, or grass open to the sky. In practice, they are most common in extreme hills and other hilly biomes.
Hilltop stones have a 1/40 chance to generate in any given chunk where the above requirements are met.
Hilltop stones will not generate in any chunk where a random aura node has already been generated.
Structure[]

Hilltop stones with the center obsidian tile block removed, revealing the hidden wisp spawner.
Hilltop stones are constructed on a 7x7 pad of randomly mixed obsidian and obsidian tile with the corner blocks missing. A ring of eight obsidian totem block pillars, each at least two blocks tall, sit on the perimeter of the pad. At the pad's center is a single obsidian tile block, on top of which sits a chest full of loot. Below the tile is a vanilla spawner that spawns wisps. Hovering two blocks above the loot chest is a sinister aura node.
If the biome is not a cold biome, some totems may occasionally generate covered in vines.
If the structure generates on jagged terrain in a way that would leave a gap beneath the obsidian pad, extra blocks will be generated beneath the pad to fill the empty space.
Loot[]
The loot chest will contain two drawings worth of loot pulled from the same loot table as dungeon chests.
Trivia[]
- The name of this structure appears nowhere in the game itself. The name "hilltop stones" is derived from how it is referred to by Thaumcraft's source code.
- All hilltop stones generate with their loot chests facing south.
- Hilltop stones are the most common eldritch structure generated by Thaumcraft by generation chance, making them relatively common in biomes with sufficiently high altitudes.