Judy Wasserman/Correspondent Mary Cummings Park has been a somewhat unrecognized parcel of natural beauty for decades. The 200-plus acres located in Woburn and Burlington offer a blend of wildlife, vegetation, and water features that encourages a variety of outdoor recreational activities. For much of its existence, though, the site has been neglected, rarely used, and the subject of possible development. But a group of Burlington and Woburn residents was determined to protect and preserve it. In 2007, they established the Friends of Mary Cummings Park, a 501c(3) nonprofit, and began a campa...