Sibiseonnyeotanggyegok, valley in Gangwon Province, South Korea

Sibiseonnyeotanggyegok is a long, narrow valley with several small waterfalls and natural pools at the foot of Seoraksan Mountain. The V-shaped terrain stretches about eight kilometers and contains various baths of different shapes, including the notable Peach-tang bath with a distinctive rock formation behind its waterfall.

The valley lies in the Inner Seorak section of Seoraksan National Park, in Buk-myeon, Inje County, Gangwon Province. On 11 March 2013 the Twelve Fairy Baths area was designated Korean Scenic Site No. 98. The name comes from a legend that fairies descended nightly to bathe here, and from a tradition of twelve pools, though only eight exist.

The name means "twelve fairy baths", from a legend that fairies came down from the sky each night to bathe at Seoraksan. Tradition holds there were twelve pools, though eight exist; the peach-shaped one, Bok sung-a-tang, is counted the most beautiful.

The path through the valley is easy to follow and takes about two hours for the full walk, with small iron bridges crossing the water. Wear comfortable hiking shoes with good grip, bring water to drink, and avoid visiting after heavy rain when water levels rise and crossing becomes difficult.

Peach-tang, one of the eight pools, is named for a deep hole in the rock shaped like a peach, and it is counted the most beautiful of them all. The valley is called Twelve Fairy Baths after a legend of twelve pools, though only eight exist.