Harz Mountain Steam. Narrow-Gauge Railway. Experience the sheer pleasure of riding to the summit of the Brockenbahn Railway as the 12-mile line rises dramatically some 1,700 feet amidst deep forest. Then we take a 37-mile ride from Wernigerode-Westerntor to Nordhausen, and finally, we revel in the splendor of the Selketal Railway, where we view a landscape that is among Germany's finest. 60 minutes.