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Overview – The hills, canyons and ravines of this huge forest preserve were formed by a glacier that left behind ponds, lakes and sloughs as it melted. It is the Forest Preserve District's largest holding, with 14,000 acres of mostly hilly and forested terrain. The woods of Palos are filled with white, red and black oaks as well as sycamores, ironwood and pawpaw trees, making it an awesome place for an autumn excursion. – – The Experience – Palos offers more than 32 miles of trails, ideal for hiking, mountain biking, cross-country skiing, fishing and bird-watching.…