Great view of a tunnel built under the Air Line rail road which is big enough to drive a bus through.
From the intersection of Route 44 and 89 in Ashford (Warrenville section), take 44 east. Pass the intersection of 44 and 198 in Phoenixville and the intersection of 44 and 97 in Abington. Pass the Mashamoquet entrance for camping and come to the main entrance of Mashamoquet State Park. Take the first left after this entrance onto Babbitt Hill Road. Travel almost 2 tenths of a mile to where the old rail line is located. Room for a couple cars to park.
Go west down the rail line and look for a stream far below which goes under the rail bed. You have to find the easiest way you can to go down this steep embankment to the west bank of the brook downstream of the rail bed. Follow the gully at the bottom, to as close as you can come to the rivers edge. Walk downstream until you come to a oak and an evergreen which are growing side by side with their roots intertwined. These are right on the rivers edge. The root of the pine goes right around the back of the oak. Here you can get a good view of the tunnel. If you get to the curve in the river, you went too far. From these trees, take a bearing of 250 degrees and walk 10 steps to a large oak. From this oak take a reading of 240 degrees and walk 22 steps going uphill to 2 oaks which are growing from 1 trunk. On the southwest side of the oak is a small man made enclosure covered with a few rocks. Move the flat rock standing on it's edge to reveal the letterbox. After stamping in, go back the way you came.Before you set out, please read the waiver of responsibility and disclaimer.