Mauritus is a group of islands in the Indian Ocean between Africa and India. They are a former overseas territory of France, but today they are an independent state.
This islands were formed by volcanism. The caves on this islands are volcanic caves, most of them lava tubes. Other caves are formed in very young biogene limestone at the coast lines, typically coral reefs.
In the year 2000, 140 caves were known, with a sum of 16.5km of cave passages.