A recreation passport is needed for entry to the park. Park only in Designated areas.

Algonac State Park's major attraction is viewing freighters of the world along the one half mile of St. Clair River frontage. The park is open all year for a variety of activities including camping and a day use area. Two campgrounds are available, the Water Front and the Wagon Wheel. The day use area has a picnic area, picnic shelter, and restroom facilities. Algonac is also home to rare habitats, the lake plain prairies and oak savannas that provide places to view prairie plants, wildlife and butterflies. Algonac State Park contains approximately 1,500 acres and has a half-mile of St. Clair River frontage. Archery and trap shooting are available.

This should be a simple 2 stage multi.

At the posted coordinates you will see a sign.

For A, number of letters of the persons last name that installed the item minus 1.
For B, number of letters in the second word on the sign.
For C, number of letters in the first word of line 7.

For X, second number of the year on the sign.
For Y, number of Eagles pictured.
For Z, number of Q's on the sign.

N 42° 38.ABC W 082° 30.XYZ