21. Al Hotah Cave near Al Hamra features an underground cavern and unique underground lake system. 22. Palm Desert sits atop a vast underground lake replenished by water from the Colorado River. 23. The cave known as the " Underground Lake " is also located in this community. 24. The innermost cavern contains a crystal-clear underground lake . 25. Wafra Farms are fed by the underground lakes . 26. The lakes sometime become underground lakes or rivers. 27. We watch open-mouthed as the stage is transformed with lightning speed into the Opera House's underground lake . 28. The rest sinks into underground lakes or flows toward the Gulf of Mexico, turning rivers into sewers. 29. The cave contains the world's largest non-subglacial underground lake , The lake is located around below the surface. 30. There is an underground lake called Moqua Well in Moqua Caves in the southeast of the island.
