There are eight species of Baobab tree, but only one is native to the African mainland. Six of its relatives live in Madagascar and one in Australia. Baobabs only grow below 1000m (3,000 ft) in tropical and the oldest are said to be well over 2000 years old.
Baobabs can reach heights of up to 30m. The largest in existence now has a height of 22m and a diameter of 47m. Since fires have hollowed out parts of the trunk, the owner has turned it into a bar and wine cellar. Carbon dated at around 6,000 years old, this has a claim to be the oldest living tree in the world. Elsewhere those with hollow trunks have been used as burial sites and the trees have become sacred.