From many parts of the Korean Peninsula, too, stone swords, stone knives, stone spears, stone arrowheads, stone axes and so on have been unearthed. The range of finds in Korea extends from Kyunghung Province; Hae Ju and Anak in Hwanghae Province; Yangyang and Choon chun in Kangwon Province; Ansung in Kyung-gi Province; Puyo in south Choonchon Province; Andong and Kyungju in North Kyungsang Province; and Mirang in South Kyungsang Province. 

Useful to add this from: 
In Sun Seo (Official 10th Dan) 
Chairman/President 
Korea KiDo Federation