the basis of Lechuguilla's remarkable formations. 它们最终形成了龙舌兰洞的奇景
It was Lechuguilla's gypsum crystals 龙舌兰洞的石膏结晶群
They discovered that Lechuguilla's limestone had actually been eaten away by sulphuric acid, 他们发现龙舌兰洞的石灰岩 实际上是被硫酸侵蚀的
Lechuguilla's rock had not been eaten away by running rainwater. 龙舌兰洞中的岩石并非被流水侵蚀