For those of you in Indiana and those who wish to visit; DIRT (Discover Indiana Riding Trails) has been working with Indiana Department of Transportation GIS to put together an interactive Google Map which differenciates road types with in the counties of the Hoosier National Forest. This should help in routing and putting together some great weekend adventures with-in Indiana. (Link) To learn more about the Interactive Google Map of DIRT roads. Please help support DIRT by becoming a member. The Mission Statement of D.I.R.T., Inc shall be, "A grass roots organization dedicated to creating opportunities for responsible motorized trail and secondary road users in Indiana".