every mountain range, rille , and lava tube will have been explored.
每一座山峰、月谷和每一处溶巖管将得到勘测。
lights illuminate the thurston lava tube in the hawaii volcanoes national park. lava tubes serve as underground pipelines, allowing molten rock to flow under and away from volcanoes.
灯光照亮了位于夏威夷火山国家公园的瑟斯顿巖溶洞。巖溶洞像一个底下管道使熔融巖石从火山下端流走。
therese madden, third from left, in viogelmir, a lava tube cave in iceland.
特蕾泽 梅登,左起第三个,在viogelmir,冰岛的一个熔巖洞。
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.
因为有沿熔巖隧道管,形成了印度一些地方的屋顶坍塌,有可能进入一端出来的另一面。