You searched for: Place University of Michigan Botanical Gardens, Dixboro Site, 4.5 mi. northeast of Ann Arbor. Center of Marsh Hawk area. [A 1961 map of the UM Botanical Gardens indicates Marsh Hawk Woods was located east of the buildings. Approx. Lat. 42.2997 Long. -83.6589.] Remove constraint Place: University of Michigan Botanical Gardens, Dixboro Site, 4.5 mi. northeast of Ann Arbor. Center of Marsh Hawk area. [A 1961 map of the UM Botanical Gardens indicates Marsh Hawk Woods was located east of the buildings. Approx. Lat. 42.2997 Long. -83.6589.]