A Weyerhauser tree planting crew found human remains in a remote area southeast of Molalla.
The Clackamas County Sheriff's Office says the remains were there before the Labor Day wildfires.
The remains included a partial human skull. They also found a white low-top style canvas athletic shoe, size 9.5, and a dark gray metal ring with a squared red stone.
The remains were on a steep slope in a ravine.
Clackamas County Search and Rescue volunteers also responded to the scene to run rope lines down the hill.
The Oregon State Forensic Anthropologist is working to identify the remains.