Undara Lava Tubes are only 190,000 years old – the result of the Undara volcano explosion. The lava ran for 160kms from the volcano across the plains. The tubes were created by the lava getting stuck in a river valley, and the upper lava hardened quicker than that which flowed below, essentially creating a tube. Undara Lava tubes are the longest in the world, and youngest (one of only 20 known lava tubes). The boys were enthralled with the information our tour guide provided. The great thing about the tour was there was only 9 of us on the ‘Active’ tour. With such a small group, the guide decided that we’d have time to explore a couple of extra tubes. We scrambled over logs and down into the ground. We saw these micro-bats and all sorts
... read more