If you are interested in the High Mountain Park Preserve, there are two YouTube videos worth a look.
The first (above) is all about Franklin Clove, by the late Franklin Lakes historian Jim Longo.
(I am leading a walk in his memory this Saturday; it is booked solid, but I hope to do more in the spring. I am also giving a free talk about the Clove and High Mountain's summit this Friday. More info is here.)
The second, below, is an amazing 360-degree aerial video by Andreas Lauschke for The Nature Conservancy and LightHawk. It gives you a sense of the vastness of the preserve -- and the suburbs nearby.