Just be careful not to disturb a potential crime scene or an SAR start point. While it may be well meaning to remove these items, simply entering and disturbing the site might jeopardize a potential criminal prosecution or complicate SAR operations by adding footprints and/or contaminating human scents. Whether it is an isolated item or an entire camp, I would suggest leaving the item/camp alone, marking it on your map and perhaps place some surveying tape 9or other brightly colored object) on the trail near the item/camp to make relocation easier. Report the observation ASAP. If cell phone communication is possible, notify the park rangers, 911 or police, report the finding and request guidance as to whether to stay (if possible) nearby or meet them at some location to provide them with location.

If you have a camera, video or cell phone camera/video, taking pictures as you found the item(s)/camp may be extremely useful.

Pete