Found a trail on the hillside above north Troy, NY

Found a trail on the hillside above north Troy, NY It was the oddest moment.

I happened upon it on a Saturday ride with no one to accompany me . . .

http://www.mapmyride.com/ride/united-states/ny/niskayuna/736128381945358764

and a map to look at :

What is this route?

I had never heard about it.

I took a standard route east to cross the Hudson near Peebles Island, then up into town, north a bit to 112 th or so, then east across some neighborhoods, then up the hill to find a trail or a pedestrian way. Is this cyclable? We'll see.

I bump along to find that there is a real trail, then a chance to go back down near a park. So I rejoin the city streets, turn north, back to 112 or 114, to make it back across the bridges to the western side of the flowing waters.

I return home.