Lake Oku, situated at an elevation of 2,227 meters on Mount Oku in Cameroon's Northwest Region, is a crater lake encircled by dense cloud forest. The lake, covering approximately 243 hectares, is renowned as the sole habitat of the Lake Oku Clawed Frog, a species classified as critically endangered. The surrounding Kilum-Ijim Forest, designated as a nature reserve by BirdLife International, is home to numerous rare species, underscoring the area's ecological significance. Visitors can access Lake Oku via a hiking trail from the nearby village of Oku, offering an opportunity to experience the region's rich biodiversity and cultural heritage.