When I walk to the Clove in the High Mountain Park Preserve, I enter from the end of Scioto Drive or the little circle on Indian Trail Drive -- both in Franklin Lakes.
I've always suspected that the roads once extended into what is now the High Mountain Park Preserve.
This old Hagstrom (early 1960s) shows that two roads from Franklin Lakes did lead into what is now the preserve.
Interstate 287 was proposed at that point. The dotted line across the bottom denotes the Bergen-Passaic border.
That thin black line denotes a stream that flows over Buttermilk Falls, located in Passaic County but outside the preserve.
The clove would be at the bottom of the map, slightly left of center.