Koro volcano is a group of young basaltic cinder cones on 16x9 km wide Koro Island between Viti Levu and Vanua Levu, Fiji. Some of the cones are possibly less than 10,000 years old.
Koro belongs to the volcanic Lomaiviti Islands. The youngest lava flows on Koro were erupted from its NNE-SSW-trending chain of cinder cone form a flat lava field mostly confined to the central plateau.