Osong Waterfall (오송폭포) (五松瀑布) is in Hwabuk-myeon, Sangju-shi, Gyeongsangbuk-do. Located in Jangam-ri, it also falls within the boundary of Songnisan National Park. This cascade drops 15 meters in five sections. It was named for the Osongjeong Pavillion, which is nearby.
