Southern Main Lines Tavistock to Plymouth including the Callington branchSouthern Main Lines Tavistock to Plymouth including the Callington branch 20. 95 This album completes the final scenic part of the long journey from Waterloo to the Tamar Valley and gives an insight into the complex evolution of the railways of Plymouth. The heavily graded branch through Calstock and Gunnislake to Callington forms a special feature herein. Stations & Locations Stations Photo Tavistock North 1 6 Bere Alston 7 23 Calstock Viaduct 24 27