Cowles Bog Trail

The Cowles Bog Trail highlights an area of such outstanding plant diversity that it was designated as a National Natural Landmark in 1965. This location, where Dr. Henry Cowles conducted much of his early work in plant ecology and succession in the early 1900s, remains an important focus for scientific study today.

Explore several distinct habitats along this 4.7-mile trail including ponds, marshes, swamps, black oak savannas and beaches. Steep sand dunes near Lake Michigan can make this a strenuous journey. Many visitors pack a lunch to enjoy at the shoreline while resting for the return trip (don’t forget to “pack out” your trash). Make sure to bring plenty of water, sun protection, and extra clothing layers as the weather at the lake can be very different than at the parking lot.