Although Fugen-dake is the highest peak of the mountain with a summit elevation of 1,231 m (4,038 ft 9 in), Honshaka, a peak located at the border of the two prefectures, is what is commonly referred to as Mount Shaka.

[2] The mountain summit has a large flat top and the Emperor Keikō Monument.

The south side of the summit is a vertical cliff that goes down all the way to the valley.

[3] The Fugen-dake peak of the mountain, in Ōita Prefecture, is connected with a road and has a radome.

[2] The Shaka-dake Gozen-dake Jūsō Course is a 7.4 km (4.6 mi) climbing course that takes about 4 hours and 40 minutes to finish.