Prong Lake Carry-in is a ~300-yard portage access point located off Highway 70 west of St. Germain that provides entry to the Bittersweet Lakes State Natural Area chain of four pristine, motor-free lakes.

The portage trail is wide and relatively easy, with a steep but manageable launch into clean, shallow water; vehicles with good clearance can drive closer to reduce portage distance.

This access point is ideal for paddlers seeking a remote wilderness experience with minimal effort, offering connections to five reservable rustic campsites across the four-lake system.