With amazing underground limestone caves and volcanic lava tubes this true adventure drive starts just an hour's drive from the coast at Mareeba and heads to the vast savannah plains of the great Australian outback. At Dimbulah, you can take a detour to the historic former mining towns of Thornborough and Kingsborough to explore old cemeteries and see the well preserved Tyrconnell Gold Mine. Nearby is Mount Mulligan, a dramatic escarpment known as Queensland's Uluru and the scene of the State's worst mining disaster. If you're a train buff, stop at Almaden and join one of North Queensland's most unusual rail journeys aboard the Savannahlander railmotor. Exploring the famous limestone caves and surrounding Australian scrub at Chillagoe is a must. Fish the Walsh River and visit the historic copper smelter ruins while there. This trail is also your link to the fascinating Undara Volcanic National Park - home of lava tubes and gem fossicking. The remote park contains the remains of the Earth's longest flow of lava originating from a single volcano, occurring more than 190,000 years ago. On the way back via Ravenshoe and Atherton, take a welcome rest at Innot Hot Springs to enjoy the waters' healing powers.