Ipswich River offers more than 12 miles of trails that invite you to explore the forests, meadows, and wetlands. A drumlin and esker, key landscape features, were formed by a glacier 15,000 years ago. Boulders stacked to create arches and a grotto setting, constructed in 1905, provide an adventurous walk along the Rockery Trail. Or canoe the Ipswich River, which meanders through the sanctuary.