Cascadia is a bioregion in the Pacific Northwest of North America, encompassing parts of British Columbia, Washington, Oregon, and California. It is known for its diverse ecosystems, including coastal rainforests, mountains, and volcanic landscapes. The region is characterized by its unique climate, which supports a variety of plant and animal species. The term "Cascadia" is also associated with the Cascadia Subduction Zone, an area where the Juan de Fuca Plate meets the North American Plate. This geological feature is significant for its potential to produce large earthquakes. Additionally, Cascadia has a rich cultural history, influenced by both Indigenous peoples and European settlers.