These 43 mountains are the ones I have judged to be of the second rank of Korea's holiest, in other words from #34~#66, by the criteria explained on this page and my 20 years of visiting them and studying this subject. They break down in an unbalanced split between 23 in the western regions and 16 in the eastern and central regions (mostly, the Taebaek Range and its southern extension now dubbed the "Yeongnam Alps"). They are listed here in north-to-south order. No mountains from the Democratic People's Republic of Korea (North Korea) are listed here, due to our lack of information about historical and current mountain-worship traditions there; so this list is effectively South-only. Click on the name to see my photos and discussion of that mountain and its San-shin shrines.
Eastern Regions (20):
Seorak-san설악산 Gangwon Prov, Sokcho City, National Park, 1708m
Sam-ak-san삼악산 Gangwon Prov, Chuncheon City, City Park, 654m
Seong-in-bong 성인봉 Ulleung-do Island (Gyeongbuk Prov), County Park, 984m