Murakami Sanin 2001' is a report of one of the investigations which were conducted at that time, and it repositioned the pilgrimage roads in the Kii Mountains including Kohechi by their connections with the belief in Mt. Koya (temple), and introduced new historical materials.
この時期の調査・研究には高野山信仰との関連から小辺路を含む紀伊山地山中の参詣道を捉えなおした村上・山陰2001があり、これには新史料の紹介がある。