有些井是露天的巨坑，每个斜边都有几百级台阶，通常是一层一层的。
Some wells are vast, open craters with hundreds of steps paving each sloping side, often in tiers.
此外，还可以观察到巨坑或地面冲击波的现象，这些现象将在第六章中加以叙述。
In addition, cratering and ground shock phenomena are observed, as will be described in Chapter VI.
当洪水形成的瀑布从悬崖上奔流直下，击打下面的岩石时，它冲出几公里宽的巨坑，称作瀑布潭。
Where the water cascaded off precipices in cataracts and crashed into the rock below, it scoured out vast pits several kilometres wide called plunge pools.
伯利兹城最富盛名的旅游胜地莫过于巨大的水下天坑——蓝色巨洞以及玛雅遗址。
The most famous tourist attractions in Belize include the Great Blue hole, a giant submarine sinkhole and the Mayan ruins.
伯利兹城最富盛名的旅游胜地莫过于巨大的水下天坑——蓝色巨洞以及玛雅遗址。
The most famous tourist attractions in Belize include the Great Blue hole, a giant submarine sinkhole and the Mayan ruins.
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