Pros:
This course isn't "all-terrain" in the literal sense. There is pretty much one terrain here. It's rugged and hilly. It will wear you down and wear you out. It is up and down and up and down and up again. The fairways are fair and quite generous but you better keep it on the fairway and you better watch where you land because going off the fairway here means a pitch-out at best and even on the fairway, there is frequently roll-away potential.
A ton of variety. Not just with the hills, but with the lengths and shapes of fairways. I'm not sure if there are any standout holes. Maybe 17 with the slow uphill through the field and then the sharper uphill approach through a tunnel. But, there really aren't bad holes either. I was constantly interested at each tee.
I played all three IDGC courses consecutively and was not as worn out as I was playing one round here in the summer. It's a struggle. A very welcome struggle for me. Barely trudging up 15 and 17. Sighing in relief at the downhill nature of 18. And if that sounds like two much, you can always play here in the winter.
Cons:
Now they give you a map upon signing in. But....you need a map. Navigating this course without it would be insane as trails for dirt bikes and ATVs intersect the course frequently and there often multiple possible routes to take. You really need to be pulling out that map, holding it at the proper angle and deciphering which way to walk from the basket.
The more open fairways, at least when I was there, were entirely made filled with knee high grass. This is about two holes out of eighteen. I'm guessing that most of thic course needs little maintenance.
Very rough. Strenuous just to walk the course so the faint of heart should be prepared. Also, when you are out there, you are out there. It's a long way from base camp to the mid-way point. The course will likely not be well-received by either inexperienced discers or inexperienced hikers. The rough gets very thick, very quickly. Throwing past a basket by a dozen feet could mean a lengthy, uncomfortable search.
As much as the terrain here is a pro, there is a con related to it. The location of the course, just a few miles from the interstate typically means a course can be played "along-the-way." This one doesn't work so well for that, especially in the summer as the remainder of your journey will likely be uncomfortable.