A WORD TO KNOW
계곡 gyegok
Mountain valley stream
A stream running down a mountain valley, with pools to cool your feet. The guide’s cool valleys include Wonjeok at Naejangsan, Surak at Daedunsan and the Mulhan valley at Minjujisan.

SUMMER IN KOREA · FROM IPHA TO IPCHU
When Korea’s cities swelter, the mountains hide clear pools, roaring falls and shaded valleys, and the coast opens its beaches. Here is where to cool off, and the rules that keep you safe in the water.
Photo: Olga Lipunova01 / THREE WORDS FOR SUMMER
A WORD TO KNOW
Mountain valley stream
A stream running down a mountain valley, with pools to cool your feet. The guide’s cool valleys include Wonjeok at Naejangsan, Surak at Daedunsan and the Mulhan valley at Minjujisan.
A WORD TO KNOW
Waterfall
Falls the guide picks out for summer: Daehye at Geumosan, Yongchu at Daeyasan and Mudeungsan, and Jikso at Byeonsan.
A WORD TO KNOW
Swimming beach
A beach that opens for swimming in season. The government register lists every one with its opening dates, below.
02 / NO CAR NEEDED
Three Seoul mountains with trails from city transport, in the Forest Service guide’s own words.
Seoul · 835.6 m
Clear rock pools and the Bibong ridge
Bukhansan (835.6 m), Seoul: granite domes around Baegundae in a national park inside the capital, reached by subway and bus.
Seoul · 740.2 m
Shade along the long valleys
Dobongsan (740.2 m), Seoul: granite peaks and clear valleys in Bukhansan National Park, reached straight from the subway.
Seoul · 632.2 m
Shade in the nut pine forest bath
Gwanaksan (632.2 m): Seoul’s rocky weekend mountain, with the cliff hermitage Yeonjudae on top, reached from subway stations.
03 / WHERE THE GUIDE FINDS COOL WATER
Each line is the Korea Forest Service’s summer note for one of its 100 famous mountains. Heights are summit altitudes, not climbs.
04 / NATIONAL PARK VALLEYS
05 / THE SEA
Korea’s swimming beaches open for a few weeks each summer. These are the 2026 dates from the Ministry of Oceans and Fisheries register; check the new list before next summer.
