Tangadan Tunnel

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A road tunnel cut through a stretch of the Cordillera Mountains to bypass the narrow treacherous stretch of the Abra River Gorge. The tunnel marks the approximate boundary between Ilocos Sur and Abra provinces and has rest stops on the Ilocos Sur side.

Where: Ilocos Sur-Abra Road, Ambulogan
Town: Narvacan

Adapted from Wikivoyage by its contributors, CC BY-SA 4.0 · 23 Sep 2026

Where it is

17.494743,120.508136

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Map from OpenStreetMap contributors, ODbL.

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