Cù Mông Pass, Mountain pass between Bình Định and Phú Yên provinces, Vietnam.
The Cù Mông Pass is a mountain route between Bình Định and Phú Yên provinces that climbs to 234 meters elevation through winding sections. The road cuts through forested hills and serves as a main connection point linking the central coastal regions of Vietnam.
The pass marked a territorial boundary in 1471 following conflict between Dai Viet and Champa kingdoms. This border line persisted until 1611 and shaped the regional divisions of central Vietnam.
The pass represents a connecting point between two distinct Vietnamese provinces, each maintaining their regional customs and traditional practices.
A modern tunnel opened in 2019 offers an alternative to the steep mountain route with a speed limit. Travelers choosing the original pass should expect longer driving times and need to navigate numerous tight curves.
The route features sharp curves and steep descents that make it one of the most demanding passages in Vietnam for large trucks. Many drivers deliberately choose the tunnel to avoid navigating these challenging road conditions.
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