onlyinyourstate.com 5/24/23: We Bet You Didn’t Know There Was A Pet Cemetery On This Massachusetts Hiking Trail. There is always something new to discover on a walk through the woods. The grounds of the Greenways Conservation Area in Wayland, Massachusetts are no exception. While you are bound to see beautiful trees, flowers, and wildlife, you may be surprised when you stumble across a pet cemetery. The Greenways Conservation Area is protected by the Sudbury Valley Trustees and is located on part of the former Paine Estate.