Centennial Tunnel (Aringay)
| The tunnel in May 2020 | |
| Overview | |
|---|---|
| Other name(s) | Salapac Tunnel | 
| Location | Aringay, La Union | 
| Coordinates | 16°23′48″N 120°22′21″E / 16.3966°N 120.3724°E | 
| Status | Abandoned | 
| Start | 1913 | 
| Operation | |
| Opened | N/A | 
| Traffic | Train | 
| Character | Passenger | 
| Technical | |
| Length | 500 meters (1,600 ft) | 
| Width | 7.5 m (25 ft) | 
The Centennial Tunnel is an abandoned railway tunnel in Aringay, La Union, Philippines. The tunnel is 500 meters (1,600 ft) long and 7.5 meters (25 ft) wide.