Yeoncheon County is a county in Gyeonggi Province, South Korea. The county seat is Yeoncheon-eup and sits on Gyeongwon Line, the Kora…Yeoncheon County is a county in Gyeonggi Province, South Korea. The county seat is Yeoncheon-eup and sits on Gyeongwon Line, the Korail railroad line connecting Seoul, South Korea, with North Korea. A variety of paleolithic relics have been discovered at Jeongok-ri, first in 1978. Since 1993 the Yeoncheon Jeongok-ri Paleolithic Festival has celebrated the discovery.