This letterbox is hidden at the Cedar Pond Wildlife Sanctuary in Wenham, MA.
Parking is on Cherry Street in Wenham, look for a small Mass Audubon sign. (Parking for Cedar Pond is not where the "P" is on the map - you'll actually be parking and starting off from where the three gray dashed lines are, which represent the parking area/driveway).
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Sean's clues (with some clarification in { } from Mom):
Once you park, you'll see two gates. We went to the gate on the left, that's the trail we followed.
{After passing the gate, you're going to follow the old driveway quite a ways. There will be a stone wall along the left of the driveway/trail.}
When you find the abandoned house ruins, go to them and explore.
{Keep an eye out for a trail that will veer off to the right, leading to the ruins of an old estate. The house ruins were clearly visible from the main path during early spring, but may be more hidden once the undergrowth fills out in the summer. Follow this short trail on the right, you'll quickly reach the ruins of a long-abandoned mansion. If you come to a point in which the trail passes through an opening in the stone wall and descends down a steep hill, you've gone too far.}
Stand on the patio, right at the front. Then look down the hill and see a big tree. There's some fallen logs that point to it. The U-Wing has crash landed behind that tree!
{Part of the ruins is a nearly circular patio, with wrought iron fencing. If you stand between the two decorative wrought iron sections, and look down the hill towards the pond, you'll notice several larger oak trees just slightly to the left of center. There are two fallen logs that are pointing towards the tree closest to the center. Make your way to that tree. The letterbox is hidden behind it's trunk, tucked n behind a few rocks and covered with bark and some fallen leaves.}
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After you find the letterbox, either backtrack to return to your vehicle, or continue on through that opening in the stone wall to further explore the property. The loop around Cedar Pond is worth it!
Here's a link to a full-sized PDF of the trail map, but keep in mind that the trails are not clearly marked. We continued through the gap in the stone wall, down the steep hill, and took a left at the bottom. After that, any time we reached a Y-intersetcion, we took a right, which looped us around Cedar Pond, and eventually returned us to the base of the steep hill. From there we retraced our steps back to the parking area.
* Be sure to be liberal with the insect repellant, and check for ticks once home!
