Jinseki-gun, Jinsekikogen Town, is a municipality that borders Okayama Prefecture, with three cities in Hiroshima Prefecture and two cities in Okayama Prefecture. Jinseki-gun, Jinsekikogen Town was formed through a merger in 2004, which included the village of Toyomatsu. At the time, Toyomatsu was the only village in Hiroshima Prefecture, so the merger resulted in the elimination of a village from the prefecture. As the town is located on the Kibi Plateau, much of the town is at a high elevation. The town is home to a super public bath called Yukkura Sanwa. It is unique in that it is located in nature and is one of the town's popular spots. There are also many other attractions, such as Senyogahara Fureai no Sato.