It is claimed by North Korea to be the tomb of Tangun, legendary founder of Gojoseon, the first Korean kingdom.

North Korea's leader Kim Il Sung insisted that Dangun was not merely a legend but a real historical person.

As consequence, North Korean archaeologists were compelled to locate the purported remains and grave of Dangun.

[2] In the October of 1993, through the thesis called the "Excavation reports of the mausoleum of Dangun(단군릉발굴보고)", North Korean academia announced that 86 human bone remains were found that can be traced to two individuals, one man and the other woman, and by dating the bone of the man using the method of electron spin resonance dating, it was found to be from more than 5011 years ago.

South Korean historians think it's more likely to be a tomb of a regional power during the Goguryeo kingdom based on the artifacts found at the site.