Case file · Sacred site
Chamseongdan, Dangun's altar on Manisan
A stone altar on the summit of Manisan, Ganghwa Island, said to have been built by Dangun to worship heaven; Goryeo kings performed rites there.
1264 CE · 37.61, 126.44 · status: official
The account
The Goryeosa records a royal rite at the altar in 1264. The National Sports Festival flame is still lit here each year.
The sceptical view
The Dangun attribution is legendary; the present structure is a later rebuild.