Cowles Bog

Cowles Bog is a protected wetland in Indiana Dunes National Park featuring a system of trails that wind through diverse habitats. The paths connect ponds, marshes, oak savannas, and sandy beach areas bordering Lake Michigan.

Henry Chandler Cowles conducted groundbreaking research in this location during the early 1900s, developing key ideas about how plant communities develop over time. His work became foundational to the study of plant ecology across North America.

This wetland serves as a place where people study how plant communities change and interact with one another across different seasons. Visitors come to understand how water, soil, and vegetation work together to create the landscape they see around them.

The area can be reached from two parking areas along North Mineral Springs Road, with the main trail to the lake shore running about 1.7 miles. Sturdy footwear is helpful since the paths experience variable conditions depending on the season.

The wetland supports more than 1,100 species of flowering plants and serves as a nesting ground for Sandhill Cranes, Great Egrets, and other bird species. This abundance of wildlife makes it a notable destination for bird watchers and nature observers.