Ollala Placer Near Tenmile, Oregon | The Diggings™
The Ollala Placer is a placer mining operation. The ore mined is composed of gold. The ore is found in channels of unknown dimensions. The host rock in this area is gravel from the Holocene epoch 11,784 years ago to present. The Oregon Coast Range of the Pacific Mountain System characterize the geomorphology of the surrounding area.