the part I saw, up on top, was neither challenging nor particularly pretty, but there may be better.
There is a steep grade near a lake someplace, next to the asphalt road, and that goes up top. That looked interesting.
Rowher is not really by six flags, right? It's above Agua Dulce off the Sierra Highway, at least the official entrance is.
The trail that Eric speaks of is one end of Rowher Trail that ends at Bouquet Canyon reservoir. That side was pretty intense the last time I was there but I know it's changed since then. There's some go-arounds that you can take on some but you can't avoid others.
From Rowher Flats OHV area, you can get on Rowher Trail between the 2nd and 3rd parking lots and you go up, up, up. There's been some crazy accidents there, usually from people coming down in High Range and losing brakes (I'm sort of guessing here), but that trail is challenging on many levels.
If you don't want too challenging right off the bat, you can go down Texas Canyon and hit the fire road to the top (first left past the first parking lot).
We go up there to ride dirt bikes mostly, I've been on the trails with trucks but it's very popular with motorcycles for sure.
It's a fun play area that's close and you can almost choose your challenge level with lots of practice areas if you look for them.
Myself and others in the LA trail crew help maintain and run Rowher flats about once a month or so. And yes it’s up above Agua Dulce off the Sierra Highway not really next to six flags.
Rowher flats offers steep grades and some great look out points of views of the area. Like someone else brought up it’s not all that challenging. On a scale of 1 to 5 it’s like a 2 but if weather gets bad it quickly turns into 4 with big mud pits. It’s a fun morning ride through the hills on a weekend morning. This time a year the afternoons will be getting pretty hot.
In an off-road situation decending a steep hill I always like to be in 4Low range and put the transmition in 2. This is primarily so you can crawl down rather than brake down. Because when you apply your brakes the rig can get a little squirly and start to move you side ways which is ALL BAD. If it's a smaller hill and I didn't need low rage to get up it then I will just leave it in 4HI with CDL engaged so the ABS are off and put the transmition into 2 and then back to D once at the bottom.
On a side note if you have not done your CDL (Center Differential Lock) try to score a Hazard switch in the classifieds for $10 or pay the $40 for a true CDL switch and find the capped pig tale behind your dass above the stereo and hook it up. I wouldn't recommend the 7 pin mod until you get more hard core or get a trailer.