San Marino is an enclave (landlocked) surrounded by Italy in Southern Europe, on the border between the regions of Emilia Romagna and Marche and about  from the Adriatic coast at Rimini. Its hilly topography, with no flat ground, is part of the Apennine mountain range. The highest point in the country, the summit of Monte Titano, is  above sea level; the lowest, the Ausa River, is 55 m. San Marino has no still or contained bodies of water of any significant size.