The state park is a 2100-acre, shoreside pocket within the national lakeshore; it's located at the end of Hwy 49, near Chesterton. It has more amenities, but also more regulation and crowds (plus the vehicle entry fee). Wintertime brings out the cross-country skiers; summertime brings out the hikers. Seven trails zigzag over the landscape; No 4 up Mt Tom rewards with Chicago skyline views.