White Photography and more. Photographers of all skill levels are encouraged to attend. Maudslay State Park is a mix of open fields, 19th century gardens, beautiful stands of hardwood and pine forest, ponds, carriage roads, and a stone bridge. Perfect for exploring in any season, the 480-acre park along the Merrimack River is a fantastic photographic destination. Attendees will meet in the park parking lot at 1pm sharp. The walk concludes at 6pm.