開山塚古墳

▪️ Climb the stairs in the Yamate area of ​​the Hozoji parking lot This is Korikawa No. 1 located at the place. From the Koan Kofun Group including Korikawa 2-4 It consists of one branch group. * For details, see the Yao City Tourism Database

Located in the precincts of Hozoji Temple, Ishimuro is a large horizontal hole type tumulus in Takayasu Chizuka. It seems that the tour is possible with the permission of Hozoji Temple.

Kaizanzuka Kofun It belongs to the Korigawa branch group of the Takayasu Chizuka burial mounds. Located in the precincts of Hozouji Temple, Morse investigated and sketched the Kaiyamazuka burial mound in the early Meiji era, and introduced the results as "dolmens in Japan." Designated as a national historic site in 2015. From this area, you can overlook the Osaka Plain, and the scenery at dusk is recommended. About 20 minutes on foot from Kintetsu "Shigisanguchi" station. Below, from the Yao City Tourism Database. "On the ridge on the mountain side of the precincts of Hozoji Temple, there is a horizontal hole type stone chamber burial mound built around the latter half of the 6th century, including the Kaiyamazuka burial mound (Korigawa No. 1 burial mound). The figure is also drawn in the part depicting the state of the precincts of Hozoji Temple in the "Kawachi Meisho Zue". These are a branch of the Takayasu tumulus group, which consists of nearly 250 tumuli distributed at the western foot of Ikoma in Yao City. The name of the tumulus, Kaizanzuka tumulus, is derived from the fact that the Seiryo Pagoda, which is the mausoleum of Kazuhisa Yoshiyama, who opened the Soto Sect Hozo-ji Temple in the Edo period, is behind the tumulus. The total length of the stone chamber is 13m, and it is the largest double-sleeve type horizontal hole type stone chamber burial mound in the Takayasu burial mound group. In addition, Edward S. Morse, an American naturalist who discovered the Omori Shell Mound, conducted a survey such as creating a precise figure in 1879, and was the first to introduce it to Western academia. It is an ancient burial mound that played an important role in the history of archeology. Korigawa No. 2 Mound, Korigawa No. 3 Mound, Korigawa No. 3-B Mound, and Korigawa No. 4 Mound are smaller horizontal hole type burial mounds than the Kaiyamazuka burial mound. The Korigawa No. 2 tumulus is a one-sleeve type tumulus, and the Korigawa No. 3 tumulus is a double-sleeve type side-hole type tumulus. The Korikawa 3-B burial mound is a sleeveless side-hole type stone chamber burial mound found at the hem of the Korikawa No. 3 burial mound, dating from the beginning of the 7th century. The Korigawa No. 4 burial mound is a horizontal hole type stone chamber burial mound with a total length of about 8 m. These burial mounds, including the Kaiyamazuka burial mound, became a historic site designated by Yao City in 2004 and 2005 as a valuable cultural property that conveys the ideal state of the Takayasu burial mounds to the present day. [Source: "Historic Site Road / Stainless Steel Explanation Board" (Yao City Board of Education, 2006)] "

It is a circular burial mound with a diameter of about 30 m and a height of about 6 m, which is thought to have been built in the middle to the latter half of the 6th century. The approach is to climb the stairs leading to the graveyard on the slope of the mountain (there is an explanation board for the tumulus near the entrance to the stairs) from the Hozoji parking lot, and there is a guide board and a stainless steel gate on the right side in front of the top of the stairs. The stone chamber has a long entourage, and the scale of the entrance room is quite large, so I was able to enter the inside of the stone chamber without much difficulty.