Close to the summit of Todt Hill, the city’s highest natural point, Todt Hill Road runs through a protected strip of forest that was intended for a highway that was never built. Veering off the main road onto the two-block Sussex Avenue, the forest is on the left and single-family homes on the right.
On the shoulder of the road appears a concrete block and an indentation in the ground with a swamp deeper in the woods. This is where Willow Brook has its headwaters. I didn’t see any frogs here, considering that the location is at Sussex Avenue and Croak Avenue.