The Pine Forest Trail on Geumgangsan Mountain in Uljin goes through a beautiful forest of lush pine trees growing tall and straight with uncommonly bright bark. These special trees are called Geumgang Pine Trees, sometimes shortened to "gangsong" ('songi' is pine in Korean). The forest has many old trees, including at 520-year-old "grandfather pine," leading to the forest being designated a protected status. Visitors who wish to walk through the pine tree tunnel and enjoy a 'forest bathing' experience must make reservations in advance.