Opalchenie Peak (Bulgarian: връх Опълчение, ‘Vrah Opalchenie’ \'vr&h o-p&l-'che-ni-e\) is the peak rising to 4500 m at the south extremity of Vinson Plateau, Sentinel Range in Ellsworth Mountains, Antarctica. It has precipitous and partly ice-free south slopes, and is of low prominence except to the south, where two parallel ridges descend steeply southwestwards with Donnellan Glacier flowing in between and Mount Slaughter rising on the more southerly ridge.
The peak is named after the Bulgarian Volunteer Force in the 1877-1878 Russo-Turkish War and the Macedonian-Adrianople Volunteer Force in the 1912-1913 Balkan Wars, ‘opalchenie’ being the Bulgarian for ‘volunteer force’.
Opalchenie Peak is located at , which is 2.66 km south-southeast of Silverstein Peak, 990 m south of Fukushima Peak, 7.49 km northwest of Mount Rutford, 4.09 km north by east of Mount Slaughter and 7.41 km east of Brichebor Peak. US mapping in 1961, updated in 1988.
This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.