From among the mokkans (a mokkan is a narrow strip of wood bearing an official message) written by Prince Nagaya during the Nara period unearthed in Nara, one was found with the writing, "Tsuge-no-himuro (himuro at Tsuge)."
奈良で出土した奈良時代の長屋王の木簡から「都祁氷室（つげのひむろ）」と書かれたものも見つかっている。