 It cascades from the Middlesex Fells Reservation in an amazing waterfall only be channeled underground to Spot and Ell Pond Brook.Further up, at Spot and Ell Pond Brook (near the current Oak Grove MBTA station), there is a tributary that is mostly underground, but appears in Pine Banks Park and Forest Dale Cemetery.Alongside the commuter rail tracks to Wyoming Hill Station in Melrose, the brook is above ground.