地下水很可能将某些物质溶解在水中，这些物质又帮助水来溶解某些岩石物质。地下水溶解一度曾在这里的石灰石，并将大部分石灰石带走。
The underground water is very likely to have dissolved in it materials that help it dissolve certain rock materials. The water dissolved most of it away.
石灰石是由碳酸钙所构成的岩石。
巴勒斯坦的岩石主要是石灰石，它们形成的悬崖边有很多供人躲藏的山洞，躲在里面可得保护和平安。
In Palestine rocks were primarily limestone, and they formed cliffs with caves that became hiding places for protection and safety.
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