Silver Mountain

The Silver Mountain is located close to the border of the the Land of Mountains and the Land of Sunshine. Shortly before the the sealed the  inside of him, Hyōko and the Ten Tails fought for control of the land. Hyōko emerged victorious and the Ten Tails was defeated Their battle - which involved two Tailed Beast Ball's being shot - left a scar in the earth that would come to be called the Silver Mountain.