Thurston Lava Tube(Hawaiʻi Volcanoes National Park)
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Hike through a lava tube left by an underground flow of molten lava. The tube is completely dark so bring a flashlight.
Drive to the Thurston Lava Tube parking lot.
Which maps cover the area?
The first part of the lava tube is lit by lights mounted on the walls of the tunnel and is all most visitors get to see. The second, and more interesting, part is unlit and is only accessible to those who come prepared with a flashlight. The second part of the tube extends 340 m in complete darkness. At the end, the tunnel just stops and you turn around and go back 340 m in complete darkness.
Do you need any permits? What's the cost?
How can I find more info? Any guide books?