If you love the cold winter season so much and would prefer challenging winter treks, the best place to go to is Seorak National Park where snow would not melt even after a long time, keeping \ the mountain in its preserved, snowy state. That’s why it is called Seorak because it is derived from Seol and rak, which literally means snow and big mountain, or A big mountain of snow. The park stretches across 4 cities and countries: namely Seokcho, Inje, Goseong, and Yangyang, and is declared as a Biosphere Preservation District by UNESCO. The entrance of the park has gift shops, small restaurants, and stalls, where you can buy stuff and hiking necessities. For those who would love a less steamy adventure and an aerial view of the beautiful park, a cable car ride will willingly take you to the mountain’s peak.
The National Park’s popular peaks are as follows: Daecheongbong (the highest), OeSeorak, and Naesorak, which houses various sites and attractions that are yet to blind your eyes. Aside from the picturesque view of the peaks, that’s scissoring the vast blue sky, the mountain is also home to astonishing rock formations, waterfalls, caves, and temples! There are so much to see like the Cheonbuldong Valley, Ulsanbawi Rock, Gwongeumseong Fortress, Geumganggul Cave, Gwimyeonam Hermitage, Biryong Falls, Oryeon Falls, Togwangseong Falls and more.
The most popular hiking course is the Biseondae-Madeungnyeong Course and Biseondae-Cheonbuldong-Daecheongbong Peak Course.
More info about Seorak Mountain National Park:
http://english.visitkorea.or.kr/enu/ATR/SI_EN_3_1_1_1.jsp?cid=264211
https://blog.naver.com/kgb99099/220905243146