In July, follow the captivating story of “Iron Mask,” an adaptation by Spencer Davis, and watch as performers attempt to uncover the mystery behind the man whose face and identity is obscured for decades. In August, hikers can play along in a game of “Clue: The Musical,” where they get to select the killer’s weapon and room in which the murder takes place. Low-impact hikes suitable for strollers, walkers and wheelchairs will take place on July 5 and Aug. 2. Each performance lasts approximately three and a half hours. Participants should wear comfortable shoes, weather-appropriate clothing and bring a chair or blanket, water bottle and insect repellent.