01/02/2020. Now returning overland from my sister's place near Huelva to my home near Manchester, over three days. My sister has joined me for this trip to see a bit more of Spain and France. First day takes us to Zaragoza, starting with a bus from Sanlúcar de Guadiana village to Huelva, where the bus station is close to the former railway station on the original line from Zafra. We caught three trains: Huelva - Madrid - Tudela de Navarra - Zaragoza, and each train changed gauge (and overhead supply voltage) once on its journey. The gauge changing is done at about 10 km/h and is generally very smooth.