Editing Dwarf cancels task: Dangerous terrain

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This message means that the path a dwarf has chosen has become occupied with deep [[water]] or [[magma]], or the dwarf is no longer on solid ground. In the case of water, dwarves will path through water at depths of [3/7] or shallower. Dwarves cancel their task if confronted with water that is [4/7] or deeper (which often happens when players are slowly filling accessible pools or moats or what have you). As the dwarves attempt to cross the body of water during the filling, they will be interrupted by any tiles of [4/7] water sloshing around. Magma, of course, can also flow across a dwarf's path and cause a cancellation, but for that it only requires a depth of [1/7].

If a miner [[channel]]s the floor out from under another dwarf, the latter will cancel because of "dangerous terrain". The same applies if a dwarf opens a floor hatch that another dwarf was standing upon, or if any mechanically-operated buildings cease to provide a walkable surface.

Solid furniture without a "walkable" surface also counts as dangerous terrain.  For instance, a dwarf standing on the top of a raised [[bridge]] will cancel its job, with this cancellation message. Trees growing through [[bridge]]s{{bug|7872}} can override the "walkable" tag, leading to dangerous terrain alerts.

Fortresses with [[waterfall]]s near high traffic areas or meeting areas can generate these messages with annoying frequency, though it can be amusing to see "Dwarf cancels Attend [[Party]]: Dangerous terrain" when a partygoer steps underneath the waterfall in your dining room or sculpture garden. To limit warnings caused by waterfalls you can reduce the amount of water in motion and/or block frequently-inundated tiles with a [[statue]] or [[fortification]]. 

It can also mean the dwarf is currently in dangerous terrain, and is canceling a job on the other side of the map or that the dwarf requires building materials that are at the bottom of a lake or river.

If there is a river on your map with treacherous [[carp]], this is often the message which heralds yet another of your dwarves drowning due to being yanked in by fish. Fun.

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[[ru:Dwarf cancels task: Dangerous terrain]]