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Mountain pass in Vietnam
Cù Mông Pass (Đèo Cù Mông) is a mountain pass between Bình Định and Phú Yên provinces in Vietnam. It is on the 1A National Highway. In the 1470s, the pass marked the southern limit of the Lê dynasty extension of Vietnamese rule.
References
Views of seventeenth-century Vietnam: Christoforo Borri Page 20 Olga Dror, Keith Weller Taylor, Cristoforo Borri - 2006 "In the 1470s, the Le had extended Vietnamese rule into the south as far as Cu Mong Pass, on the southern border of what is now Binh Dinh province"