A photo from inside Indian Tunnel. The light is coming from holes in the roof where it collapsed over time, as will happen to all lava tubes.
来自印度的隧道内的照片。光洞是来自屋顶的地方，随着时间的崩溃，也将发生在所有的熔岩管。
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The rough, rocky floor of the Indian Tunnellava tube.
粗糙的，岩石层的印度熔岩隧道管。
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Because there were roof collapses at several places along the lava tube that formed Indian Tunnel, it is possible to enter on one end and come out the other side.