This is incredible. We found this somewhat inadvertently. I was curious for 'off road trails' as we ended up renting a Jeep instead of a car. The road up starts paved and is steep but fun, with glorious views of the isthmus. As you ascend through the clouds, the pavement ends and it literally feels like you're driving thru the Adirondacks. Pines, dirt road, winding mountain side.. buuuut then unlike the 'dacks, this place has height. I consider myself a reasonably experienced driver, and am aware of what a rental Wrangler JL on all-seasons is capable of. We popped it into 4wd for one section of about 60ft, primarily to not roost the tires into the already-trenched trail. No biggie tho. Above/beyond a point, things are not marked. The main trail gate beyond one section was closed, but we took the other path. This was further adventurous, but got a little unsure of the trails well above tree-line, at a red arrow on a pole. Technically I think that was one end of the skyline trail. We encountered some fine folk on Enduro bikes, and headed back down. Excellent time.