"We thought the cold was our biggest problem in the Tasmanian wilderness. We were wrong."

Deep in the remote, limestone karst country of the Tarkine, three hikers stumbled upon a bottomless sinkhole. That night, the knocking started. Not from the woods, but from underneath the earth.

If you love slow-burn, atmospheric horror that makes you question the shadows outside your window, plug in your headphones and listen to this haunting audio story.

What do you think was circling their camp? Let us know in the comments.