(Illinois)
Goose Lake Prairie State Natural Area is a 2,537-acre (1,027 ha) state park in Illinois. More than half of the state park is a tallgrass prairie maintained as an Illinois Nature Preserve. It is located in Grundy County near the town of Morris approximately 50 miles (80 km) southwest of Chicago. (Ref: https://en.wikipedia.org/wiki/Goose_Lake_Prairie_State_Natural_Area)