It is the Tauszvets River Bridge. An arch bridge with a total length of 130 meters completed in 1937 (Showa 12). In 1955, with the construction of the Kasuhira Dam, it ended its role as a railway bridge. Currently, it is submerged from spring to autumn when the water level of the dam lake rises, and is popular with tourists as a "phantom bridge" that appears in winter. On a clear, windless day, when the bridge is reflected on the surface of the lake, it looks like glasses. This is the only arch bridge in Japan that can be seen and hidden depending on the season, which is why it is called a "phantom bridge". Due to this fluctuation in the water level, it is affected by water and ice, and the Tauszbetsu Bridge is severely dilapidated, and it has a stately appearance that is hard to believe is a concrete bridge. However, it is said that it will remain in its original appearance for several more years. If you want to see it up close, you need to book your tour early. From a distance, you can see it from the observation deck! It is an area infested with bears, so you need to be careful.