Sulfur cave #spiders build an arachnid megacity and possibly the largest-ever spider web https://phys.org/news/2025-11-sulfur-cave-spiders-arachnid-megacity.html

An extraordinary colonial spider community in Sulfur Cave sustained by chemoautotrophy https://subtbiol.pensoft.net/article/162344/

"the entire food chain is powered by sulfur-oxidizing #microbes that thrive in the cave system and are consumed by tiny non-biting midges. These small #insects are easily caught in the web, providing an abundant, continuous food source"