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 Undara Lava Tubes
Undara crater erupted 190 000 years ago, sending a molten lava flow that travelled over 160 km and soon covered an area of 1550 square kilometres. It is the Longest single lava flow recorded in the world. As the exterior lava hardened it formed tunnels, or pipes, through which molten lava continued to flow, creating Undara's black basalt tubes. Lava tubes are also found in Victoria and elsewhere in Queensland, but the most extensive system is at Undara.
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Read more... [Undara Lava Tubes]
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