 These are now displayed in the Ryuhoden (“Treasure Hall”), located next to the Sanjūdō Pagoda (the 3-story pagoda).These Sutra mounds were created by priests in times of war to hide their treasures but also many items were buried in this way as a result of the belief that the end of the world was coming at the start of the 10th century.Believed to house a "kami" called Hiryū Gongen worshiped at Kumano Nachi Taisha, it is part of the "Sacred Sites and Pilgrimage Routes in the Kii Mountain Range" UNESCO World Heritage Site.