Chongam-ri Earthen Castle explained

Hangul:	청암리토성
Hanja:	淸岩里土城
Rr:	Cheongamni toseong
Mr:	Ch'ŏngamni t'osŏng
Context:	north

The Chongam-ri Earthen Castle is a fortification thought to date to the Gojoseon period. Located near Pyongyang, North Korea, it is similar to other earthen fortifications of the period. It was made of alternating layers of soil, rock and sand.^[1] It is one of the National Treasures of North Korea. The wall is crescent-shaped and about 3450 metres long.^[2]

A jeweled, gilded crown dissolved in mercury, dating from the Three Kingdoms period, was found at the site.^[3]

References

39.0392°N 125.7625°W

Notes and References

1. Baek . Jong-oh . June 2006 . 북한학계의 고조선 성곽 연구 동향 . Research Trend of North Korean Academy on Fortresses of Gojosun Kingdom . ko . 고조선단군학 (단군학연구) . . 14 . 333–360 . January 2, 2015.
2. Web site: Chongam-dong Earthen Wall . . December 9, 2015 . . March 22, 2016.
3. News: . Weaponry and Metalwork in Period of Three Kingdoms . . Pyongyang . October 19, 2007 . January 2, 2015 . https://web.archive.org/web/20141012062413/http://www.kcna.co.jp/item/2007/200710/news10/20.htm . October 12, 2014 . dead .