SCARIEST HAUNT IN INDIANA If you think horror movies are scary? Come witness real life Terror! Trails of Terror is six acres of dark, foggy, monster infested woods located in Markleville, IN.Trails of Terror has been terrifying Indiana for 11 YEARS and has become one of Indiana’s scariest attractions; and a must attend event. This heart pounding journey is full of detailed scenes, energy driven actors, and pneumatic/ animated props. Every year the trail is changed; new trails, scenes and actors…We work year round; designing, creating and building. Read more…