The lava tubes at Undara are claimed to be the largest in the world. Formed some 190,000 years ago, they were the result of a volcanic lava flow which followed a river bed. The water rapidly cooled the outer layer of molten rock, while the inner layer remained molten and flowed away, leaving the characteristic tube formations we see today. There are two main branches to the lava tubes, one of which runs for 16km and the other for some further distance. 'Undara'
is an Aboriginal language word for 'a long way'
The lava tubes can only be visited as part of a guided tour, which highlights the local flora and fauna as well as allowing access into the tubes themselves. It is essential to book your tour of the lava tubes before making your way to Undara as the tours are popular.
Near the lava tubes is a unique resort, where guests are accommodated in old railway carriages scattered through the bushland setting.
Photo courtesy of Queensland Tourism.