The History of the Kuninaka Plain and Lake Kamo, From the Past to the Present day　　－Local Specialties, nurtured by the earth－
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  • Beginners
  • Families
  • 1 – 10 people
  • 1 – 2 hours

Let's ponder one of the mysteries of Sado Island – what caused the wide, flat, Kuninaka plain to form at its center?

Sado Island has two distinctive mountain ranges – Osado in the north and Kosado in the south, cradling the wide open Kuninaka plain and Lake Kamo in between. There is a close relationship between the formation of the plain and the formation of Lake Kamo. By the end of this course, participants will understand how Kuninaka Plain and Lake Kamo were formed, and how generations of residents have cultivated the local specialties of Sado Island, such as rice.

(日本語)
  •  Geopark Interpretive Panel
  •  Signs
  • Bus Stop

 Itinerary

  • Sado Island Geopark Information Center
  • 1Shiizaki Observation Deck
  • 2Persimmon Farm
  • 3Kaiden Rokku
  • 4Oyster Hut

Sado Island Geopark Information Center

Sado Island Geopark's base facility

Sado Island Geopark’s base facility and the administrative office of the Sado Geopark Promotion Council. Stop by to learn more about how Sado Island was formed. A model of the seafloor topography of Sado Island and its surrounding area is also on view.

1Shiizaki Observation Deck

View a mirror-like lake reflecting the Osado Mountains.

The Shiizaki observation deck boasts a spectacular view of Lake Kamo, the largest lake in Niigata prefecture. Here you will learn how Ryotsu town was formed and more about the fishery industry of Lake Kamo.

(日本語) ジオサイトの詳細はコチラ

2Persimmon Farm

Of all the fruits, why persimmons?

When you think of agriculture on the Kuninaka Plain, what comes to mind? First and foremost, rice. Along with rice, you’ll notice that cultivation of persimmon also flourishes. What is the reason for this?

3Kaiden Rokku

Why are there rice fields where there is no river?

Rice fields were developed here from the Taisho to Showa periods, but rivers typically necessary to irrigate rice fields are not found around here. Here you can discover how the rice fields were developed using well-planned systems of irrigation.

4Oyster Hut

Oyster processing place

Visitors will observe oyster huts where oysters are farmed on Lake Kamo, and learn how the farmed oysters are processed by hand.

From our geo-guide

Get ready to feel the vastness of the Kuninaka Plain! If you're lucky, you may encounter the Japanese crested ibis during this course.

Take a stroll in a geopark!

Reserve your spot today

Take a stroll in a geopark!

(日本語) 海の時代コース

(日本語) かつて佐渡は海の底にあった！

(日本語) 海底火山の活動によりできた黒い大地が広がる佐渡島南部を、特徴的な海岸線のスポットを中心に巡るコースです。

  • Beginners
  • Families
  • 1 – 10 people
  • 3～4時間

(日本語) 大陸の時代コース

(日本語) なぜ佐渡で金が採れるのか？

(日本語) 激しい火山活動によって生み出された佐渡島の金銀鉱床について、そのルーツを探るコースです。

  • Beginners
  • Families
  • 1 – 10 people
  • 3～4時間

The Role of the Stone Mill in the History of the Gold and Silver Mines

A miraculous discovery that created an island of gold

The stone mill is one technology among many that resulted in the prosperity of the Sado Gold and Silver Mines. Just like gold ore, the rock used for stone mills was produced on Sado Island, and originally created by the geological activities of the earth!

  • Beginners
  • Families
  • 1 – 10 people
  • 1 – 2 hours

Ogi Peninsula Round Trip Route

Ogi Peninsula Round Trip Route

Approximately 13 million years ago, large-scale volcanic activity occurred on the floor of the Japan Sea. The black lava that erupted during this time formed the land of the Ogi Peninsula. The unique landscape created by uplift and the erosion of the peninsula has been designated a national natural monument and a place of scenic beauty. Enjoy this magnificent scenic landscape. Wear comfortable shoes and clothing when walking on the coast because rocks are exposed in many places.

  • Beginners
  • Families
  • 1 – 10 people
  • 4時間

Aikawa Oma Port and Fukiage Coast Route on foot

Aikawa Oma Port and Fukiage Coast Route on foot

In this walking course, we will learn about the history of the Aikawa Gold and Silver Mines and look for stones that were used to grind ore. If you want to have something sweet, you can stop by Kisuke, a confectionery with a variety of Japanese and Western options. You can also enjoy sweets in the eat-in space. When walking on the coast, you'll find many exposed and sometimes jagged rocks, so be sure to wear comfortable shoes and clothes that are easy to move in.

  • Beginners
  • Families
  • 1 – 10 people
  • 2 – 3 hours

Lake Kamo Round Trip Route

Lake Kamo Round Trip Route

Lake Kamo, the largest lake in Niigata Prefecture, is a brackish lake with a mixture of fresh water and sea water. Oyster cultivation is thriving, and many oyster rafts float on the lake. The lake is home to a rich ecosystem. It is possible to get to each point by car, but we recommend going around the lake by bicycle to enjoy the beautiful scenery at your own pace.

  • Beginners
  • Families
  • 1 – 10 people
  • 2 – 3 hours

Lake Kamo and Ryotsu Town Mini Walking Course

Lake Kamo and Ryotsu Town Mini Walking Course

Why not explore Ryotsu town with a Geopark guide for an hour or so before catching your ferry back to the mainland? Ryotsu Minato is a coastal town originally built on reclaimed land. During the short tour, you can enjoy a view of Mt. Kimpoku from the side of the oyster hut lined Lake Kamo, and learn about the long, narrow sand bar that separates the lake from the open sea.

  • Beginners
  • Families
  • 1 – 10 people
  • 1 – 2 hours

Ogi Peninsula Shukunegi Route

Mars here on Sado?!

How did land shaped by the forces of the sea and earthquakes influence people's lives? Walk on the Shukunegi Coast and explore the links between geology and human activity.

  • Beginners
  • Families
  • 1 – 10 people
  • 1 – 2 hours

Ogi Peninsula Moto-ogi Route

Why are there tub boats in the Ogi area?

Tub boats are small vessels found uniquely on the Ogi Peninsula of Sado Island. Go and discover the reasons for yourself.

  • Beginners
  • Families
  • 1 – 10 people
  • 1 – 2 hours