Ko Gyu Hong (M) is a forestry columnist. After graduating from Sogang University, he worked as a daily journalist. Since the spring of 2000, he has been sharing a photo column called "Wood Letter from the Pine Forest" through his website "Pine Forest.com." He is also director of the Chollipo Arboretum and Adjunct Professor at Hallym University and Inha University. Books written by him include Our Trees to Be Protected (three volumes in total), Ko Gyu Hong's Special Lecture on Trees in Korea and Schubert and the Tree.