Sitting at a campfire in front yard. A guest noticed an triangle shaped area of the sky with no stars showing.

Looking due west at approximately 60 degrees up, there was a triangle shaped area that was completely black with an occasional tiny white light which showed on the west edge of it. It was a crystal clear night and we had seen numerous satellites and shooting stars. We observed a satellite approach the triangle and actually disappear as it passed ( presumably ) above the triangle. It then appeared on the other side. Something was there blocking out light. We then saw three smaller lights fly in different directions around the object and eventually disappear at the object. It remained in the area approximately an hour and was just suddenly gone. Never saw it move, it just was suddenly not there. Stars which had been covered were then visible. None of us had seen anything like this.