Andy C...I'll be making this run a lot, so hopefully you can make it another time. There's a guy with an H1 who says he knows that area like the back of his hand. So I'm thinking we might be able to put together a run that will cover over 30 miles.
Something to remember...this trail (or, the area I've covered) isn't something you can cruise through at 20 mph. Getting through the one 15 mile trail that I know of will take HOURS. Its slow going due to it being VERY narrow in a lot of places (its certainly not an unpaved dirt road). If you like your paint job, bring shields.
Something else...this isn't a very difficult run. There aren't any rocks and the mud holes aren't something you're going to get stuck in. The toughest part is threading a wide vehicle through a narrow space (especially when it's a narrow curve). So, your manuvering skills and knowledge of the apex point on your rig is key.
During the rainy season, it's a whole 'nother run all together due to the DAILY rains. At that time, it will be the same narrowness, but DEEP water and mud holes that you very well could get stuck in. Not a place you want to go on your own.
There are pictures of some of this trail in the Gallery section of the forum to give you an idea.