Backcountry campsite 3C4 (Upper Cache Creek) is a remote backcountry campsite in Yellowstone National Park's Lamar River area that accommodates up to 12 people with no stock animals allowed.

The site typically becomes accessible in early July and offers a primitive camping experience with a food storage pole; water sources are available nearby, though reports indicate the primary source may be dry, requiring hikers to locate water approximately 1/4 mile upstream.

Access requires a backcountry permit and hiking via the Cache Creek/Lamar River trail system.