Lake Bosumtwi (also spelled Bosomtwe), situated within an ancient meteorite impact crater, is approximately 8 kilometres (5.0 mi) across and the only natural lake in Ghana. It is situated about 30 km south-east of Kumasi and is a popular recreational area. There are about 30 villages near this crater lake, with a combined population of about 70,000 people.
The Ashanti consider Bosumtwi a sacred lake. According to traditional belief, the souls of the dead come here to bid farewell to the god Twi. Because of this, it is considered permissible to fish in the lake only from wooden planks.
The Lake Bosumtwi impact crater is 10.5 km in diameter, slightly larger than the present lake, and is estimated to be 1.07 million years old.
The crater has been partly eroded, and is situated in dense rainforest, making it difficult to study and confirm its origin by meteorite impact. Shock features such as shatter cones are largely overgrown by vegetation or covered by the lake. However, drilling of the crater's central uplift beneath the lake floor has recently provided an abundance of shocked materials for scientific study. Tektites, believed to be from this impact, are found in the neighbouring country of Ivory Coast, and related microtektites have been found in deep sea sediments west of the African continent.
It is possible to walk around the lake but swimming is often not advised.
Horseriding tours of the lake can be arranged through The Green Ranch, which has a guesthouse and a vegetarian restaurant. Call +233 20 29 17 058 and +233 20 35 34 870 or email: firstname.lastname@example.org.
There are a few guesthouses in the area. The newest is Cocoa Village Guesthouse, located 5 km right of Abono, after Rainbow Garden Village guest house (near Anyinatiase village).
Email: email@example.com on Tel: +233 20 861 2675.