Blinky Bill and the Earthquake - S2.E9

Continuing their camping trip, Blinky's gang slip away to explore a mountain mine. They get trapped after a collapse. As they try to find a way out, a creepy Goanna frightens and chases them through tunnels and down a mine shaft in carts. Once outside the mine and down a river, Blinky's gang are very far and lost from Greenpatch.