Stone Column

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Stone Column
Stone Column.png
Vital statistics
Size 1 x 1
Skill(s) RequiredSpecific needed skills.<br>The default skills every hearthling starts off with, Oral Tradition, Primitive Tools & Wilderness Survival), are ignored. Tunneling
Object(s) Required Stone x30 Bar of Hard Metal x1
Repaired With Nugget of Common Metal
Can be Lifted No
Hit Points Yes (value unknown)
Soak Value (unknown)
Go to Objects

Icon keyboard.pngBuild > Buildings & Construction > Mine Construction > Stone Column

Stone Columns are mining support structures which prevent cave-ins in a eleven tile radius. They are generally more convenient to build in a mine due to being built with stone instead of wood or metal.
Stone Columns are the second tier of Mining support columns, between Mine Supports and Mine Beams.

Note: Mined tiles will still show dust animation (see Mining page) when under the radius of the support, to warn of cave-in tiles, but caveins won't occur under support.

Mine support take damage every time it prevents a cave-in.

For a mine support structure to prevent a cave-in, it must touch the center of the tile:

Quoted from Loftar
<SuperDaddy> Does it count if the radius is touching part of the tile?

<loftar> Well, to be precise, it needs to touch the exact center of the tile.

This means tiles covered by the column radius just slightly aren't supported.

Caution: whenever a mine support is removed, all tiles under it are checked for unstable mine tiles. If there are unstable tiles within range, which are now, with the removal of the mine support, unsupported, the removal will cause a cave in. This means that you can now tear down mine supports without cave ins, if you still have proper support around it

Support Radius

The squares around the column that are safe to mine.

All tiles marked in blue are safe to mine. Mining a tile outside of the blue area may cause a cave-in. This structure will support mining within a 11 tile radius.

Design guide for stone column


  • Stone Columns can be built on the surface and in houses too for aesthetics.

Game Development

  • Loose Velvet (2023-06-22) >"Mine Supports now take less damage when preventing cave ins (about 0.5x). When a Mine Support prevents a cave in, the normal collapsing stone effect is played on it to indicate that."
  • Loose Velvet (2023-06-22) >"When outside the protection of a mine support, encountering a mine warning tile (e.g. one near a cavein tile, where cave dust falls) will interrupt area mining operations."