Ruen Icefall (Ledopad Ruen \le-do-'pad 'ru-en\) descends towards False Bay from the circus overlooked by Simeon Peak, St. Cyril Peak and St. Methodius Peak in Friesland Ridge, Tangra Mountains, on Rozhen Peninsula in eastern Livingston Island, South Shetland Islands in Antarctica.
Ruen is the summit of Osogovo Mountain in south-western Bulgaria.
The icefall is centered at which is 2 km north-northwest of St. Methodius Peak, 3.43 km east-northeast of Ogosta Point, and 4.39 km southeast of Napier Peak on Hurd Peninsula (UK Directorate of Overseas Surveys mapping in 1968, Spanish in 1991 and Bulgarian in 2005 and 2009).
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.