Complex sentence: The highest peaks are Nevosa (1,545 m) and Altar dos Cabrões (1,538 m) located at the border with Spain, so these mountains continue into Spain, where they are known as Xurés.
Split into simpler sentences: The highest peaks are Nevosa (1,545 m) and Altar dos Cabrões (1,538 m) located at the border with Spain. The mountains continue into Spain where they are known as Xurés.