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Oka Toyoshiro [1/2] The medieval mountain ruins were the castle of Mr. Chosokabe Motochika’s history.

Oka Toyoshiro [1/2] The medieval mountain ruins were the castle of Mr. Chosokabe Motochika’s history.

Oka Toyoshiro is a medieval castle in the east and south of Kochi City, and the birthplace of the Tosa feudal lord and Chosokabe Motochika Castle. The tune Ring Group is built in the east and west along the ridge centering on the Honmaru of the highest part. The first castle was the Kamakura period, and it was castle until the time when it became the champion of Shikoku in the age of former parents, and surrender in the invasion of Hideyoshi immediately after, and the House territory was made the Tosa one country, the castle was moved to Daikosaka Yamashiro (current Kochi Castle) and Urato Castle, and the generations of Oka Toyoshiro became the ruins. There is a Prefectural history folklore museum on the mountainside now, and it is possible to easily make a climbing mountain from the back.

Basic Data >
Name: Oka Toyoshiro (Wikipedia)
● Location: Nangoku-shi, kochi ( map )
-Lord: Mr. Chosokabe Motochika
● Castle: Around the 13th-14th century
-Remains: Ishigaki, Horikiri, earth base, tiger mouth, etc.
● Information: Japan Hyakuna Castle No.180 ( list )

Date of Visit: May, 2017
A visit to the Oka Toyoshiro- one , two .

Visit >

okoujo-01_8270It is a standard to go up from the back side of the Kochi Prefectural Museum of History and folklore to Oka Toyoshiro. First, we went to folklore museum.

okoujo-02_8268And in front of the entrance, the statue of Chosokabe Motochika ex-parent flight. Aiming to be the champion of Shikoku, the image of a young day is just trying to fly away. The bronze statue is going to take a closer look, then go up the back stairs and head for the Oka Toyoshiro. The Hill of the hill is exactly Oka-Yutaka Castle ruins.

okoujo-03_8274They climb up the stairs The museum itself is quite on the top, so there is no other round. There is no feeling of Yamashiro.

okoujo-04_8401From the top of the stairs, look at the statue and the museum. The statue’s feet are a picture of Shikoku, where the statue is located in the Tosa, just “off the Tosa”. It is understood that the museum is considerably built on the mountain when looking at the distance.

okoujo-05_8276The entire guide Board of Oka-Yutaka Castle ruins on the stairs. The place where it is painted to the Orange is probably a tune part, and there seems to be a stable mark ring of the transfer in the back in the side of the bunk, the filling bottom, the filling, the three no stage, and four steps. Let’s go around.

okoujo-06_8277The stone steps of the ground might be the one of the maintenance accompanying the park making of the future.

okoujo-07_8278First of all, I went to the second stage. It is flattened flat.

okoujo-08_8279The ground base was built in surroundings, and the upsurge was seen only a little.

okoujo-09_8280A place where you feel quite high. The altitude is about 100m. This is the east direction. It is said that it is a cultural property area called “Covered of Tosa” which can overlook Kokubunji ruins and the Nationalist government ruins.

okoujo-10_8282The base of the second stage is built according to the shape of the hoop and the melody ring.

okoujo-11_8284Looking down on the slopes, it is quite an angle. It is a considerable difficulty to climb up from here and to attack, and it might be impregnable when the ground base is built on that and the soldier waits.

okoujo-12_8283Two-step panoramic view. Compared to the steep slopes, this is a fairly flat process. The magnitude of Mr. Chosokabe Motochika’s power suggests.

okoujo-13_8286I look toward the Honmaru from the second stage. A big Horikiri seems to have been built between the inflection wheel.

okoujo-14_8287A two-step explanation board. By the excavation, it was found that the soil base on the slope side that I saw earlier was 3m in width and 1m in height before. There is no trace of the building, and it is thought that it was a place of the soldier accumulation surrounded by the soil base before in the ground made by the soil carried from the filling etc. Because the ruins have come out from deep underground.

okoujo-15_8291View from the front of Horikiri. The shape of the triangle toward the tip of the ridge.

okoujo-16_8288This is Horikiri which separates the second stage and the filling lower part. It is considerably deep, and it is sharpened to the V character sharply.

okoujo-17_8289Horikiri and the well explanation board. Reflective panels are hard to read. Horikiri is 3-4m wide and around 2m in depth. Moreover, there is a square well (Miho Tamei) which digs the bedrock at the bottom of this horikiri.

okoujo-18_8293Horikiri. The well mark is depressed in the foreground.

okoujo-19_8292Well marks. It is understood that it dug up the rock and it built it. Because it was a rock, water was not representations, and it was a place to save rainwater. The stone product of several steps can be seen on the bedrock.

okoujo-20_8294Beyond the Empty moat (Dobashi), go up the serviced staircase. The top of this is the bottom.

okoujo-21_8298Bottom of the refill. It is hardened with concrete.

okoujo-22_8299Bottom Cornerstone Building Trail Description panel. It is said that the cornerstone building ruins and the soil base remain. The cornerstone was lined up every half.

okoujo-23_8301It is hardened with concrete, but the stone which seems to be a cornerstone (the dummy to indicate the position) is arranged at equal intervals. Because the green on the right is the soil base and the slope on the left is a filling slope, the building seems to have stood in a lot of inflection wheel. However, why is it hardened with concrete?

okoujo-24_8302The lower part of concrete is left early, and it is packed. This is equivalent to the top of the castle and the Honmaru. There were traces of buildings that had been built before, and at the time of Visit (2017/5), a double-layer mock tower had been erected for a limited time. Because it is above the historic site, or tear down for a limited time.

okoujo-25_8307On the side of the mock tower is a small marble Hill ruins monument.

okoujo-26_8303In front of the mock tower, the remains of the cornerstone Trail. What is the building of a mock tower on the cornerstone Trail?

okoujo-27_8308The cornerstone building marks. It was a long building in the east and west where the building of two large and small buildings connected with the stone ruins, and was a building of more than one layer which corresponded to the tower after.

okoujo-28_8306Let’s go up on the mock tower because it is a special effort. I looked at the castle in the composition of the castle at that time.

okoujo-29_8316Because it is a limited-time building, the inside is simple without painting.

okoujo-30_8309This building is named “Tower”. I gave the tower to coincide with the holding of Hiroshi Kochi Bakumatsu Restoration, and there is, the Meiji Restoration and the medieval castle, but it does not matter at all! The figure of the tower was referring to the existing tower Maruoka Castle of the Keicho period. When it is said certainly.

okoujo-31_8310Some clear pictures of excavation were exhibited in the tower. Interesting. It is posted on the outside of the Guide board, but because it is hard to see by deterioration and reflection, here is more helpful.

okoujo-32_8314To the second floor.

okoujo-33_8312View from the high column of the tower, the scene of Yutaka Oka Castle. It might have seen such a view at that time, and former parents Chosokabe Motochika.

okoujo-34_8318I got off the tower and went to the back of the tower. There is an explanation board of “filling” just in the back. The tiles carved with “Tensho three years” (1575) have also been excavated.

okoujo-35_8319Let’s go down from the back of the tower to the third stage. A part is cut between the ground base.

okoujo-36_8320The three-stage band was built to surround the bottom of the filling. The base is enclosed in the circumference of the third stage.

okoujo-37_8322From the third stage, I looked up the mock tower.

okoujo-38_8324Look at the mock tower from the third stage. It is simulated, but the atmosphere is noborihata.

It passes through the Ishigaki ruins and the tiger mouth of the three-stage back in the second, and to the stable track of the West. I will return to see the bronze statue of former parents carefully.

> > Oka Toyoshiro [2/2] continues. < <

Date of Visit: May, 2017
Photographic equipment: FUJIFILM X-T10 + XF14mm
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