Cowles Bog

Cowles Bog

NPS Collection


Getting There

Trailhead Parking Lots

Main Lot (north): 1450 North Mineral Springs Road, Dune Acres, IN 46304
(Look for the gravel entrance road on the right just before the town guardhouse)

Greenbelt Lot (south): 1184 North Mineral Springs Road, Dune Acres, IN 46304
(Look for the entrance road on the left just after the railroad tracks)

Trailhead GPS Coordinates

Main (north): 41.645191, -87.084633 (Decimal Degrees)
Greenbelt (south): 41.636898, -87.087185 (Decimal Degrees)

Hours & Information

  • Both parking lots open daily from 6:00 am to 11:00 pm
  • Free (no access fee).
  • Bicycles and motorized vehicles are not allowed.
  • Pets are permitted on a leash (6' or shorter).
  • Trail is not wheelchair accessible.
  • Trail surface is mixture of loose sand and packed dirt.
  • No potable water.
  • Year round porta-potties are available at both the north and south parking lots.
  • The north parking lot is gravel and has room for 10 cars (no handicap only spots).
  • The south parking lot is paved and has 18 spots (1 spot is handicap only).
  • The south parking lot is also the trailhead for the Calumet Rail Trail and Porter Brickyard Trail.



Cowles Bog Trail Map
Cowles Bog Trail Map

Visitor Activities

  • Bird along the dike and trail
  • Walk up a steep dune on a designated trail
  • Hike two miles to the beach
  • Anchor your boat near the shore and picnic on the beach

Fun Facts

  • This is where Henry Cowles conducted his historical plant studies.
  • Excellent site for birding

Last updated: March 4, 2019

Contact the Park

Mailing Address:

1100 North Mineral Springs Road
Porter, IN 46304


(219) 395-1882
Indiana Dunes Visitor Center phone number.

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