Asik-Asik Falls, also known as Curtain Waterfalls,[2] is a waterfall near Alamada in Cotabato, the Philippines, on the slopes of Mount Ragang. It is known for an apparent lack of a river feeding the fall, with water coming out of crevices on a 60 m (200 ft) tall cliff instead.[3]Asik means "sprinkle" in the Hiligaynon language.[4] Much of the falls are surrounded and covered by lush vegetation, such as ferns and moss.[5]
It is theorized that the source of the falls is an underground river.[4] The pool at the bottom flows into the Alamada River, a tributary of the Libungan River and then into the Liguasan Marsh.[6]