While camping in Kimberly, OR at appx 10:00pm, myself and two others saw a disk shaped cloud hovering over our campsite. It was almost transparent. We could see through it. The sky was clear that night and the stars were out. It was silent. We all looked at it for appx 10 min when it began do move west and it was gone. We all had never seen anything like it in the sky. It almost seemed to be watching us. It did not return.