Indian Flats is a free, first-come, first-served hiker-biker campsite at Mile 42. 5 of the C&O Canal, located just north of the Monocacy Aqueduct in Frederick County.

The campsite includes a chemical toilet, picnic table, fire ring, and non-potable well water (available mid-April to mid-November); water must be filtered, chemically treated, or boiled before use.

This overnight-only site is situated 1-5 miles from the nearest parking area and serves as a convenient stopover for paddlers and hikers exploring the Monocacy River area and canal structures.