Koko Crater Botanical Garden is, as the name suggests, inside a hot dry volcanic crater. A 2-mile footpath goes past four geographical collections and a number of thematic plant collections:
Geographical Collections:
The Americas
Hawaii
Madagascar
Africa
Botanical Collections:
Cacti
Alluaudias
Sansevierias
Baobabs
Dryland Palms
Aloes
Euphorbias
Adeniums