Autumnal leaves have begun to appear on Mount Seorak in Gangwon Province, signaling the beginning of the fall foliage season. 

The Korea Meteorological Administration’s(KMA) Gangwon office said Thursday that 20 percent of the mountain, starting from the peak, has changed color. 

The Korea National Arboretum projected that 80 percent of the mountain will be covered with crimson leaves by around October 23, following a drop in temperature. 

The KMA forecast that autumn foliage for the nation on average will peak around October 26, three days later than last year.