A large chunk of "Transitory Open Space" lies behind Perry Hill School in Shelton, featuring several ponds and an Indian cave. The pond in the photo above is called Walnut Avenue Pond on the open space map. I saw a wood duck, snapping turtle, frogs, and fish in my brief visit there.
Here's a substantial Indian Cave located near the pond. The 57-acre property is listed as "Transitory" open space because it was purchased back in the mid-1990s for the eventual extension of Constitution Blvd North and other possible uses, including economic development.
Walnut Avenue Extension runs north-south through the property, although vehicles are blocked off with Jersey barriers.
This pond is located at the end of the drivable portion of Walnut Avenue Extension and is called "D'Onofrio Pond" on the open space map. It's located on private property, but can be seen from the open space.
Near the D'Onofrio Pond is some unexpected artwork, somehow color coordinated with the changing leaves.
There's really no easy access to the property, which is shown in orange on the map above. The adventurous might find their way onto the property via Perry Hill School (when school is closed) by walking behind the rear fields to the right and turning onto an ATV path there. The path takes a left across a small stream, and then you are on the Mas property. Walnut Ave Extension is another possibility. Nothing is marked, so a gps or a good sense of direction are necessary. Note on the map above that the white "roads" going through the orange open space have not been built.