Guide
The Tapu-kopu Observatory is a scenic viewpoint located in Mikasa City, Hokkaido, offering a sweeping view of the vast Ishikari Plain. Situated at the foot of Mt. Tapu (Tapu-kopu) at an elevation of approximately 144m, the site allows visitors to witness the striking changes in topography and geological layers. This location holds significant historical weight; during the Meiji era, many prominent figures visited this spot to devise development plans for the region. As part of the Mikasa Geopark, it is a unique destination where natural beauty and historical context seamlessly blend.
The spirit of the Meiji-era pioneers lives on in this landscape. The name 'Tapu-kopu' is derived from the Ainu language, meaning 'the round mountain at the summit.' The name was officially given to Mt. Tapu in 1881 by Watanabe Korekiyo, the first director of the Sorachi Shichiku-kan. During the pioneering era, influential figures such as Enomoto Takeaki, Yamagata Aritomo, and Yamada Akikoshi visited this area to survey the land, using it as a strategic base for planning vital infrastructure like the Horonai Railway. This site is not merely a scenic spot but a stage for the modernization of Hokkaido.
The greatest attraction is the opportunity to observe the topography shaped by the Ishikari Lowland Eastern Margin Fault. Visitors can read the movements of the earth through the terrain unfolding below. Additionally, the 'Iwamizawa Layer'—a hard mudstone (hard shale) layer—is a crucial feature. Formed at the bottom of the sea approximately 8 million years ago, this layer has resisted erosion more effectively than the surrounding strata, maintaining its distinct shape. This unique landscape is a precious geological treasure of the Geopark.
The scenery at the Tapu-kopu Observatory changes beautifully with the seasons. We highly recommend visiting between May and October, when the snow has melted and the landscape turns lush and green. Summer offers a stunning contrast between the verdant earth and blue skies, while autumn brings vibrant colors to the surrounding hills. Please note that the area is closed during the winter season (November to April). For the best experience, visit during daylight hours to enjoy an unobstructed view of the Ishikari Plain.
Visitors can experience 'Geo-tourism,' learning about the origins of the earth by observing the overlapping strata and fault-driven topography. The area is also known for its viticulture, where the local climate and terrain are utilized for grape cultivation, showcasing the connection between local agriculture and nature. As you gaze at the view, you can imagine the visions of the pioneers who once stood here to shape the future of Hokkaido.
The foot of Mt. Tapu is home to a beautiful viticulture region. You can find local wineries, including those that were among the first to receive Japanese wine-making licenses, producing much-loved regional specialties. Nearby, the 'Oiwake-Mineoshi Layer' offers another chance to observe geological history, featuring strata that hold memories of the sea from 5 million years ago, including fossilized shells. The entire Mikasa area is rich with historical and geological discoveries.
We recommend wearing comfortable walking shoes, as you may be navigating natural terrain. Since weather conditions can change rapidly, it is wise to carry a light jacket or rain gear. To protect the natural environment and historical heritage, please ensure you take all trash home with you and strictly avoid entering private property, such as the nearby vineyards. Please enjoy photography within the bounds of respectful sightseeing.