Part of an ancient group of mountain ranges which stretch across Tanzania and Kenya, known as ‘the eastern arc’, the udzungwa are the most extensive mountain range in Tanzania. They were formed at least 100 million years ago and many endemic species have evolved here, making them something of ‘an African Galapagos. Local taboos have helped to preserve the wildlife, and now this national park protects almost 20% of the Udzungwa mountains