For anyone planning this hike: as of August of 2013, there is a hiker's parking lot at the top of College Rd. where the head of the red trail is located. The reviews that I had read before heading out to High Mountain Park recommended parking in Lot 6 of William Patterson U, so that's what I did, and didn't immediately find the red trail head. I found the more convenient parking area upon leaving.
The yellow trail climbs to the observation point from which the skyline of NYC is clearly visible. It's a nice quiet spot. There were plenty of deer and birds but I saw no other wildlife. The trails are well blazed - it's important to follow them because there are lots of old trails or woods roads intersecting the desired route. For those who want variety, it's possible to connect to Franklin Lakes Preserve (former Haledon Reservoir) by exiting High Mountain Park on the red trail at Reservoir Dr. and walking (there's a sidewalk) to the Reservoir. There is a fence around it but conveniently, there's an entrance with access to the white trail at the intersection of Reservoir Dr. and High Mountain Rd. A word of caution about Franklin Lakes Preserve: the blue trail that is supposed to connect the islands doesn't actually go across the reservoir (unless you want to swim, which I believe is prohibited). It's quite lovely though, again an unexpectedly quiet and peaceful area. Also, the white trail that is supposed to go around the reservoir was intersected by an inlet - it's possible to cross it over 2 downed trees if you have good balance.
I estimate combining these routes makes the trek about a 7 - 8 mile hike.
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