tunnel is composed of a firm granitic layer, is 3.5 km in length, and various in depth from 50m-160m. About 1 km of it is nowadays open to visitors. Woljeong-ri Station Woljeong-ri station is a historical building in the DMZ at Cheorwon. The tourist attraction, which can only be visited on escorted security tours of the DMZ, is an abandoned train station on the northernmost end of Korail's Gyeongwon Line. Near the station there was a small yard where rail stock was stored or shunted before leaving for Wonsan, now in North Korea, along the former Gyeongwon Line. Behind the station building there is the wreck of a train, bombed during the Korean War, used by the North Korean army and bombed by U.N. forces. In 2012, it became a place where artists can meet and exhibit their works. Sokcho-si (속초시) Goseong Unification Observatory Building When the area was part of North Korea from 1945 to 1953, the building is now the closest most South Koreans can get to North Korea. There are binoculars installed on the viewing deck, and inside the observatory is a large map labelled with mountain names and the locations of military installations. Kiosks here sell liquor, cash, postage stamps and other souvenirs from North Korea. On a clear day, you can get a good view of Kumgang-san, about 20 km to the west. Despite the solemnity of the place, the parking lot is cluttered with souvenir shops and restaurants. On the other side of the lot is the Korean War Exhibition Hall. Others Gangwon Province has many tourist attractions, as well as natural monuments, including Namiseom, Tong-il Observatory (similar the Dora Observatory), Soyang Dam and Jeongdongjin. A memorial centre of the novelist Lee Hyo-seok is in Pyeongchang County. Along the coast of the East Sea, many seaside resorts are located, including Gyongpo Seaside Resort. The only domestic casino in Gangwon is Kangwon Land, located in Jeongseon County. The province also houses the largest ski resort in South Korea, Yongpyong Resort. Religion According to the 2015 census, 16.4% of the population follow Buddhism and 24.1% follow Christianity (17.5% Protestantism and 6.6% Catholicism). 58.7% of the population is not religious and 0.8% of the population follow other religions. Transportation Railway Gangwon Province's railways were originally built to transport mining resources to harbours. In Gangwon-Province, some main lines are operated. Jungang Line is connected to the Seoul Metropolitan