Sunken Lake Campgrounds and County Park
55 campsites, electricity, restrooms, shower, dumping station, picnic area, hiking, playground and swimming, fishing.
55 campsites, electricity, restrooms, shower, dumping station, picnic area, hiking, playground and swimming, fishing.
There are 13 sinkholes located at Rockport as a result of the Karst topography of the area.
Stevens Twin Sinks Preserve is a 31-acre parcel purchased in 1993 with gifts from William and Archie Stevens and other members and friends of the Michigan Karst Conservancy.
A sinkhole 75 ft. under Lake Huron's surface
Mystery Valley is a unit of the Thunder Bay Karst Preserve, along with Stevens Twins Sinks and Bruski Sink.
Karst geology features are prominent in and around the El Cajon Bay of Lake Huron.
The 2.5-acre Bruski Sink is located off Leer Rd near the intersection of Maple Lane Rd.