Complex sentence: Launceston Steam Railway narrow-gauge heritage railway runs for aesthetic and industrial heritage purposes along a short rural route, it is popular with visitors during the summer months, but does not run for much of the year.
Split into simpler sentences: Launceston Steam Railway narrow-gauge heritage railway runs as a tourist attraction during the summer months. It was restored for for aesthetic and industrial heritage purposes and runs along a short rural route, it is popular with visitors but does not run for much of the year.