|This article is about an older version of DF.|
Webs are the source of silk, and appear randomly near the cave river. The web itself looks like a light-grey gem, and is most often labeled as being from cave spiders. Similar webs can be generated by giant cave spiders, though safely collecting them can be quite a challenge.
Webs will be collected automatically by dwarves with the weaving labor enabled, but not until the fortress has a loom. A collect web task will be triggered at the loom as long as webs are on the map and in reach. This can be comfortably deactivated with - - . The weaver will then drop the collected thread in the loom and, depending on the loom setting ( - - ) and availability of a stockpile, either leave it there, immediately weave it to cloth, or put it on a stockpile. Other ways to prevent collecting are preventing any dwarf from using the loom (e.g. with the menu), deactivating the weaving labor on all dwarves or removing all looms. (Lack of stockpiles alone will not prevent this!) An easier alternative is just to suspend ( - ) the collect webs task in each loom.
Giant cave spiders shoot long strings of dangerous entangling webs at targets prior to attacking - this behaviour can be used to create giant cave spider silk farms.
Webs are delicate, and can be destroyed by contact with any creature (except a dwarf that is gathering that web), or by any other rough treatment such as irrigating, etc.
Vermin that come into contact with a web will immediately turn into remains. For sanity reasons, cave spiders themselves are immune to this effect.