Spider Cave / Spider Nest

In a rare chance, caves that can be accessed from the surface have a chance to be infested with spiders. These caves are covered in spider webs. A new type of cave spider mob is introduced; larger, brown spiders (using the first spider texture) call this cave home. Inside the spider cave, there are web sacs hanging from the ceiling that can be broken to harvest items for loot, random mob drops that have been snatched up by the cave spiders.

In an even more rare of a chance, these caves sometimes were once home to another being. Chests, crafting tables, and furnaces can be found inside. The base was abandoned by its original inhabitant, and has now been commandeered by big brown cave spiders.