Mohamed,
You've helped so many people, it is an honor to post a few words you might find of interest.
Last week I hiked from the area of the Moose Hillock campground off Rte 118 in Warren on the old, relocated Three Ponds Trail east to the present Three Ponds Trail and the Three Ponds Shelter. This old trail is mostly logging roads on its west end, deteriorating into a snowmobile trail that is used mostly by moose in the summer. I reached the Three Ponds Trail a little south of the height of land near Whitcher Hill. From this point, I went south on the Three Ponds Trail past Foxglove Pond, and the northern of the Three Ponds. In this area, the trail is also apparently a snowmobile route, with lots of moose tracks, but little evidence of hikers. Blow-downs have been removed from the trail, but the trail hasn't been brushed out much (except by moose!) Approaching the middle pond, the trail turns left (east) off the snowmobile trail. This turn would be easy to miss. The trail here is marked with orange flagging, and is obscured by growing brush. This section leads to the water's edge at the north end of the middle pond. Turning left, the trail passes a campsite overlooking the pond, and comes to the edge of an old beaver pond at the edge of the pond. The trail is marked with yellow flagging here, and crosses the top of the beaver dam. At the western end of the beaver dam is an old, painted sign, pointing north to Rte. 118 (4.5 mi.) and south to the Three Ponds Shelter (0.3mi.) and the Donkey Cutoff Trail (no mileage.)
At the East end of the beaver dam, the trail meets a more heavily used trail going north and south. Going south following the shoreline, the trail passes the Three Ponds Shelter shortly (uphill, to the east) and heads south from the pond. Going north from the east end of the beaver dam, the trail seems to head north. I was perplexed here, as I supposed the Donkey Cutoff would be marked, and would trend east. I was out of time, or I would have followed this further.
It is possible that I have misinterpreted the trails here, due to the lack of good markings, and that further exploration will reveal something else, I suppose. I can give good directions to the old trail I used if anyone's interested, and will look forward to any other information anyone has on this area.