In 2010, a group of environmentalists and geologists discovered that the underground river has a second floor, which means that there are small waterfalls inside the cave.
2010년에 환경 운동가와 지질학자들은 지하강이 2층으로 나뉘어져 있으며, 동굴 안에 작은 폭포가 있다는 것을 발견했다.