Been thinking about going down to Great Seal for the first time.

According to some websites COMBO has taken over Great Seal. On MBTProject is says there are 9miles of trail but in
the comments it says over 30miles of trail. That is great, no pun intended, if there is.

What is the deal? Are there really 30miles of trail? It was always difficult to justify the drive from Delaware for 9 miles of
riding. Are there updated trail maps somewhere?