A Weyr is a type of settlement in the fictional world of Pern, created by author Anne McCaffrey. It serves as a home for dragonriders and their dragons, providing shelter, training, and a community for these bonded pairs. Each Weyr is typically located near a suitable area for dragon flight and often features a central cavern for gatherings and meetings. Weyrs are essential for the defense of Pern against the threat of Thread, a deadly spore that falls from the sky. The dragonriders, along with their dragons, work together to protect the land and its inhabitants. Each Weyr has its own leadership structure, usually headed by a Weyrleader and a Weyrwoman.