Nagatoro

Japanese: 長瀞 - ながとろ

A gorge in the upper reaches of the Arakawa River in western Saitama Prefecture. The gorge was formed when the Arakawa River eroded the Nagatoro crystalline schist rocks, and the area was designated a Place of Scenic Beauty and Natural Monument in 1924. The Iwadatami rock terraces on the west bank are rock terraces with rocks such as chlorite schist and graphite schist, as well as potholes. The Chichibu Sekibeki rocks on the east bank are fault planes bounded by joints in the crystalline schist rocks, and are covered with natural forests of Quercus glauca, Quercus serrata, and Japanese boxwood. The large pink outcrop of Kami-Nagatoro is red-stained schist, a rare rock in the world. It is the center of the Nagatoro-Tamayodo Prefectural Natural Park, and is home to the Natural Science Museum.

Nagatoro

A village in the north of the Yamagata Basin in the central-eastern part of Yamagata Prefecture. It is part of Higashine City. It developed as a small castle town after Shiba Mitsuie entered the area in 1414. In 1671, the silver mine office was relocated and a magistrate's office was established. Old maps show a double moat with the main enclosure at the center, and the remains of the moat can still be seen on the outside. The Yonezu clan lived here in the late Edo period, and the lattice-shaped village remains intact to this day.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

埼玉県西部，荒川の上流部にある峡谷。荒川の浸食により長瀞系結晶片岩類が露出してできた峡谷で，全長約 4km，幅約 600mの範囲が 1924年名勝・天然記念物に指定。西岸の「岩畳」は岩石段丘で，緑泥片岩，石墨片岩などの岩石や甌穴がみられる。東岸に直立する「秩父赤壁」は結晶片岩類の節理を境とする断層面で，アラカシ，コナラ，ヤマツゲなどの自然林におおわれる。上長瀞の桃色の大露頭は，世界の希少岩石である紅簾片岩。長瀞玉淀県立自然公園の中心地で，自然科学博物館がある。

長瀞
ながとろ

山形県中東部，山形盆地の北部にある集落。東根市に属する。応永 21 (1414) 年斯波満家の入部以来小城下町として発達。寛文 11 (1671) 年銀山役所が移転，代官所が設けられた。古図では本丸を中心に2重の堀があり，その外側にも堀跡を残す。幕末米津氏が居住して，格子形の集落がいまも元のまま残る。

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