Royal Blue ATV Trails system is West of Interstate 75. One access point is at Exit 141. The App has Points of Interest (POI) like places to park your Truck/trailer, Waterfalls, eternal flame, mines, Gas Stations, Motels, RV Parks and the like. A lot of things are named after Royal Blue that are on the East side of i-75, and, Royal Blue riding area used to be on both sides of the interstate, but now Sundquist ATV Trails is on the East, and Royal Blue is on the West. Lots to see. This app will show you where you are on the Trails and rallies on your Smart Phone (or Tablet, if it has a GPS) GPS to show you where you are, not just cell sites and WiFi, which are nearly non-existent on the trails. You buy the App once, and there are free updates, NO annual Fees, NO in-App purchases, or the like. Beware, not all Tablets have an Actual GPS, check Settings/Privacy/Location on most Apple devices to determine if you have an Actual GPS before purchasing please.