I hope to take some of my grandchildren (ages 6-12) on a fossil hunting trip near Hewitt, TX during my week there between Christmas and New Years. I've been to the Waco Research Pit with them two other times, so this time I'd like to take them somewhere else. My preferred maximum range is about 45 minutes from Hewitt, although we could go further if needed. They enjoy the outdoors and have been fossil hunting with me numerous times. Does anyone have any suggestions?