The island is formed by fossilized coral.
Approximately 90% of Chumbe Island is covered by one of the last remaining pristine 'coral rag' forests in Zanzibar. [Chumbe Island]
Approximately 90% of Chumbe Island is covered by one of the last remaining pristine 'coral rag' forests in Zanzibar. [Chumbe Island]
Approximately 90% of Chumbe Island is covered by one of the last remaining pristine 'coral rag' forests in Zanzibar. [Chumbe Island]
Approximately 90% of Chumbe Island is covered by one of the last remaining pristine 'coral rag' forests in Zanzibar. [Chumbe Island]
See photo in original gallery.