Cheyenne Bottoms
United States
Cheyenne Bottoms is a wetland in the central Great Plains of North America. Occupying approximately 41,000 acres (170 km2, 64 sq mi) in central Kansas, it is the largest wetland in the interior United States. The Bottoms is a critical stopping point on the Central Flyway for millions of birds which migrate through the region annually.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).