Warren Nature Area, located just east of Felker Park, has approximately three miles of trails. This wetland area shows how nature cleans runoff water and keeps silt from entering large streams. There are native grass areas, stream-side settings, and woodlands along the Shunga Creek. This area is the top spot in the Topeka park system for viewing birds and insects. There are many off shoot trails available and additional walks ranging from one to two miles can be taken.