In June, 1992, a villager named Wu Anai, decided to pump the water out in one of the water holes of the area. Thus, they discovered that it was actually a cave, that was filled with water. The water presumably had been there for a long period of time. It took 17 days of continuous pumping to clear the cave. They found that it was a man made cave. The discovery of this cave encouraged Wu and his companions to pump the water out of another six caves. The caves were all next to each other. They found the caves...