Lee Seoung-ho felt his heart was sinking when four children’s graves near a Catholic cemetery caught his eye six years ago. The cemetery, which is home to 37 tombs of Catholic martyrs sacrificed in the bloody persecution in the 19th century, is part of the Hanti Martyrs Shrine Pilgrimage, a 45.6- kilometer route stretched along Mount Palgong in the rustic southeastern county of Chilgok, North Gyeongsang Province.