Some of the Premier Stateliner buses travelling between Adelaide and Mount Gambier stop at the township of Naracoorte. Others travel along the coast. The caves are some 14 kms distant from the township, but I managed to enlist the assistance of the Visitor Information office to arrange transport.
My visit coincided with tours of the Alexandra Cave, as well as the Wonambi cave full of mock-ups of prehistoric animals based on the skeletons found at the site.