This monument consists of part of the Suitenbuchi Power Station, which was constructed and operated by the Shimazu family during the Meiji Period.

The Suitenbuchi Power Station was built in 1907 to supply electricity to the Yamagano Gold Mine, owned by the Shimazu family. The project was led by Gorōda Ryūsaku, director of the Mining Bureau and the adopted son of Godai Tomoatsu. The power station stood along the Amorigawa River in what is now Hayato, Kirishima City.

The facility was a stone building of approximately 218 square meters and was equipped with advanced machinery for its time, including American-made three-phase alternating-current generators and waterwheels. Its initial output capacity was reported to be 400 kVA, and electricity was later supplied underground, playing a vital role in modernizing mining operations.

In 1943, during World War II, the Yamagano Gold Mine was closed under a government directive to reorganize gold mining operations. The power station left Shimazu family ownership and was later transferred to Japan Hydroelectric Power, and eventually to Kyushu Electric Power.

In 1983, the power station building was dismantled due to deterioration. Part of its stone wall was relocated here as a monument, preserving the history of the Shimazu family’s mining enterprises in the modern era.