Arachnia's Lair is a cave system that is almost completely covered in web. It is part of the Rattling Caverns. Arachnia accepts adventurers passing, if they upon entering leaves an offering to her, such as a slaughtered animal. If they refuse to present an offering to her, she casts spells and webs from above and orders her spiderlings to attack, leaving her enemies covered in hungry tarantulas.