This one is harder to find. 287N to the Bloomingdale exit (rte 511N or Ringwood Ave) to West Brook Road on the left passing over the Wanaque Reservoir. Continue on to the second Snake Den Road West. Follow to the Boy Scout Camp.
After hiking to Assiniwikam Mountain on the dirt road back to the car I noticed the two horses on the front lawn. I thought it odd that they weren't fenced in!