These uninteresting bumps have an access problem. One is on, and the other is accessed across, the Miami Corporation's Grand Ronde tree farm.
Gates are open to the public only on weekends during hunting season.
I believe that foot and bicycle access is open the rest of the time, but watch out for log trucks. If you find the gates open the rest of the year and drive in, you are taking a chance of being locked in. Follow all posted restrictions. We took Murphey Road in from SR 18, about 4 to 5 miles west of the town of Grand Ronde. Murphey Road was signed, and probably still is.