TWO drunk men have climbed into a cave in Mount Gambier's town square and are ignoring police demands to come out.

Rescue crews were called to the Cave Gardens in the town's centre about 2.30pm after two men climbed the fence of an observation area and descended into the sinkhole.

The men allegedly took some alcohol down with them and are drunk, which police and a SES spokesperson said is making negotiations difficult.

Originally published as Drunk pair hiding in SE cave