Editing v0.31:Dwarf cancels task: Dangerous terrain

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{{quality|Fine|21:31, 10 June 2010 (UTC)}}

This message means that the path a dwarf has chosen has become occupied with deep [[water]] or [[magma]]. 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. This 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 magma it only requires a depth of [1/7].

New to DF2010, [[Channel|channeling]] is more difficult for dwarves, and a lot more likely to cause a dwarf to step down into a hole just as its filling up with water (or magma!). 

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.

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.

A dwarf may report a task cancelled due to dangerous terrain simply because they cannot reach their destination, for example, because a wall was built or a floodgate was closed.

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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