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Editing 40d:Chasm
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− | {{ | + | '''Chasms''' are a feature that appear infrequently in [[mountain]]ous [[biome]]s. They are a [[cave]] system identified by not having a [[floor]] on the lowest level (which is instead marked {{key|#}} ''Chasm''). They are similar to the DFv0.23 chasms except that they are not guaranteed to occur. |
− | ''' | + | They seem to have two forms: '''tributary''' chasms, with a similar appearance to a [[brook]] or [[river]] (a bottomless "Grand Canyon"), and '''vent''' chasms, which are like a [[volcano]] vent without the magma (a bottomless chamber). Chasms are much more common on named mountains and [[volcano]]es, along with other special features such as [[cave river]]s. Chasms may either be open to the sky or be enclosed [[underground]]. |
− | + | Chasms are not visible on the Region/World maps or the Local maps by default, but can be turned visible by setting SHOW_EMBARK_CHASM to ALWAYS in init.txt. | |
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− | Chasms are not visible on the Region/World maps or the Local maps by default, but can be turned visible by setting SHOW_EMBARK_CHASM | ||
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+ | The presence of Extreme [[Cliff]]s (20+) on the Local Map may be, but is not necessarily, indicative of a chasm. | ||
==Forms== | ==Forms== | ||
− | === | + | ===Tributary=== |
− | + | A tributary chasm appears similar to the fringed tributary section of a brook sometimes seen in mountain areas. | |
− | + | [[Image:Tributary chasm.JPG|Standard "tributary chasm" showing lowermost level descending to the depths]] | |
− | [[Image:Tributary chasm.JPG|Standard chasm showing lowermost level descending to the depths]] | ||
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+ | ===Vent=== | ||
+ | A vent chasm has a similar appearance to a volcano vent, except it does not contain magma. | ||
[[Image:chasm.PNG]] | [[Image:chasm.PNG]] | ||
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==Uses== | ==Uses== | ||
=== Garbage dump === | === Garbage dump === | ||
− | + | '''Chasming''' [[refuse]] refers to disposing of items marked for dumping into the chasm. | |
+ | This is still possible: designate a [[activity zone#Garbage Dump|garbage dump activity zone]] over the chasm and an adjacent walkable tile. To dump an item, examine it with {{key|k}} and mark it for {{key|d}}umping. [[Standing orders]] can be used to automatically dump particular types of refuse. [[Dwarves]] may cancel the dump task due to [[creatures]] they can see across the chasm, even if those creatures can't reach them {{version|0.27.176.38c}} | ||
− | + | '''Historical note''': In the 2D version, the chasm could spawn monsters, and dumping things into the chasm would provoke attacks. Dumping a sufficient amount magma in the chasm would exterminate them. It is believed that this no longer occurs in the current version. | |
=== Platform-chasming === | === Platform-chasming === | ||
− | A technique of dumping by building a platform over the chasm, and then severing the platform from the [[wall]], to permanently dispose of garbage, excess [[stone]] or [[ | + | A technique of dumping by building a platform over the chasm, and then severing the platform from the [[wall]], to permanently dispose of garbage, excess [[stone]] or [[unfortunate accident|#Walk the plank|nobles]] set on top. The severed platform will disappear into the darkness below, never to be seen again. |
===Resources=== | ===Resources=== | ||
− | + | Often [[cave spider]]s are present near chasms, creating spider [[silk]] webs that can be collected. As the chasm exposes every layer to view they provide access to easily identified resources such as [[ore]] deposits. | |
== Hazards == | == Hazards == | ||
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[[Dwarves]] fighting near the edges of cliffs have a propensity to dodge right off the precipice, falling to their deaths. | [[Dwarves]] fighting near the edges of cliffs have a propensity to dodge right off the precipice, falling to their deaths. | ||
The chasm is also home to many types of hostile creatures, including [[iron man|iron men]], [[troglodyte]]s, [[giant cave swallow]]s, [[antman|antmen]], [[giant cave spider]]s, [[ratman|ratmen]], [[batman|batmen]], [[troll]]s and [[gremlin]]s. | The chasm is also home to many types of hostile creatures, including [[iron man|iron men]], [[troglodyte]]s, [[giant cave swallow]]s, [[antman|antmen]], [[giant cave spider]]s, [[ratman|ratmen]], [[batman|batmen]], [[troll]]s and [[gremlin]]s. | ||
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{{World}} | {{World}} | ||
− | + | [[Category:World]] |