This lake is an artificial lake for power generation facilities near Tsukuiko Lake, and is in the oldest stratum — 100 million years old — in Kanagawa prefecture. In this stratum, fossils of elephants and deer that came during the Ice Age, when the Eurasia Continent and the Japanese Archipelago were connected, but could not have returned when the seas rose in the interglacial period. And human historical sites also remain.
You can observe wild birds and enjoy the nature of each season on this walking path, while exploring the ancient history.

n 708, Wado, Japanese copper, was found in Kuroya Chichibu City, surrounded by the Chichibu Mountains. It was native copper, highly pure without the need for refining. It was dedicated to the Imperial Court and the era name had been changed to the Wado era (708 – 715) in the Asuka period (550 – 710) and the Nara period (710 – 794). Wado Kaiho coins were made.
Chichibu was in the center of the basin, where goods were gathered, shipped down the Arakawa River and delivered from Edo (Tokyo) to Kamakura Kanagawa and Kyoto. The town of Edo began with Chichibu.
In the Meiji period (1868 – 1912), the shipping method was switched from River to railway. But you can still experience the history of Chichibu to create Edo(Tokyo) at the Nagatoro Gorge.

Byuo is the largest sluice gate in Japan, with a width of 40m, a height of 9.3m, and a weight of 406t. It protects 9,000 people in the hinterland of the Nubazu Port, 50ha from where a tsunami might enter the port in the east coast of Suruga Bay.
From the observation corridor, with a height of about 30m above the ground, you can see Mt. Ashitakayama, Mt. Fuji, and the Southern Alps in the north, and you can see as far as Shimizu City. You can see below the Ganyudo Coast, beyond which you can clearly see Osezaki Cape, which protrudes from Suruga Bay.

The lake side promenade of the Usui Lake is so beautiful in tender green and autumn color. It is an artificial lake with a dam at the confluence of the Nakao River and the Usui River. The Usui Pass was the bottom of the sea 12 million years ago. It is the watershed of the Tone and Shinano rivers, and was a key point connecting the Kanto region and the Shin-Etsu region (Nagano and Niigata prefectures).
In the early times, the bridge was constructed of bricks with short spans and stone columns on the Usuitoge Pass, referring to the modern German mountain railway. You can meet the heritage bridge of wisdom and ingenuity on the promenade.

This park is an experience-oriented theme park, where you can experience driving electric locomotives and ride on trolleys, using the discontinued line between Yokokawa and Karuizawa on the Shin-Etsu Main Line. The history of the Usui Pass is conveyed with the exhibition and the opening of trains to the public.
The Usui Pass was at the bottom of the sea 12 million years ago. It rose due to crustal movements, and steep cliffs were formed due to river erosion. It became the gorge with a steep slope.
Crossing the Usui Pass on the Tosan-do Road, an ancient division of the country and the main road running through it, situated along the central mountains of northern Honshu, Tohoku region, was a symbol of entering the Eastern Provinces, since ancient times.

Goshoko Lake is an artificial lake dammed by the Shizukuishi River that flows through the Kitakamigawa River. Several recreational facilities, including Shiogamori Mizubeenchi Lakeside Park and the Goshoohashi Sports Ground, can be found around the lake.
The Oiriono Botanical Garden of Wetlands in this lake park has the blossom of skunk cabbages in the beginning of April, rabbit-ear iris from late May to early June.Fireflies can be seen in the middle and the end of July. Red and white water lilies bloom in the two ponds in the end of July.

During the Nara period (710 – 794), Ishikawa Town, in Iwaki province was the gateway to Mutsu Province, the northeast region of Honshu Island. It is where Minamoto no Arimitsu (1037 – 1086), a military commander in the Minamoto clan, and the 2nd head of the Ishikawa clan, moved to, from Settsu Province Osaka, developed and ruled. Ishikawa Town is said to be the birthplace of Izumi Shikibu (Born 876) a Japanese female poet and a femme fatale with numerous lovers. Kowashimizu, spring water, still springs out, which is said to be used for Shibiku’s first bath as a baby.
This area had been one of the three major mineral producing areas in Japan, since ancient times. The largest and most beautiful crystals in Japan have been collected, and more than 150 species have been discovered. Those are introduced at this museum.

The name of Sapporo City comes from “Sapporo Betsu”, which means the big dry river in Ainu language. The flow of the Toyohiragawa River, flows through the Ishikarigawa River into the Sea of Japan, which faces the mother, Eurasia Continent from a distance. The Hoheikyo Dam supplies water to Sapporo City, via the Hoheikyo Gorge, which used to be called “the precipice of God” by Ainu people.
The magnificence of the lake and greenery makes it one of the most scenic spots in Sapporo City. It has a universal scenic beauty that transcends the state.