65yo diver drowns at Tank Cave near Mount Gambier

An underwater shot in a water-filled cave, with rocks formations

An emergency situation is unfolding at the Tank Cave near Tantanoola. (Supplied: Richard Harris)

In short:

A 65-year-old Victorian man has died in a cave diving accident in the state's south-east.

Emergency services were called to the scene at about 10.30am on Sunday.

What's next?

A report will be prepared for the Coroner.