Ron·ces·valles (rŏnsə-vălz′, rôn′thĕs-välyĕs)
A mountain pass, 1,057 m (3,468 ft) high, through the western Pyrenees in northern Spain. According to tradition, the Frankish hero Roland died there fighting the Basques during Charlemagne's retreat from a failed campaign against the Moors (778).
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