The rail-trail ends rather abruptly where a trestle carried the tracks over the Souhegan River Valley. It ends at the abutment to where the trestle once began. When I rode this trail fifteen years ago, there was a spectacular view of the valley and you could see the stone piers that once supported the trestle sticking above the trees. Now, trees obscure the view.
Undaunted, I climbed down and explored the trestle abutment and the first pier a few meters away. Both are built from granite blocks. While the trestle itself is gone, these structures remain even as nature grows up around them. Of course, a granite wall attracts graffiti artists who tagged them with a few paintings.
Below is an image of how the trestle looked back in the day. I wish I could have seen that.