Clarence Tunnel
| Overview | |
|---|---|
| Line | Main Western railway line | 
| Location | Blue Mountains, New South Wales, Australia | 
| Coordinates | 33°28′42″S 150°13′06″E / 33.478337°S 150.218253°E | 
| Operation | |
| Opened | 18 October 1869 | 
| Closed | 16 October 1910< | 
| Reopened | 18 October 1975 (as tourism facility) | 
| Operator | Zig Zag Railway | 
| Technical | |
| Length | 439 metres (1,440 ft) | 
The Clarence Tunnel is a railway tunnel that was originally part of the Main Western railway line across the Blue Mountains, New South Wales, Australia. It is 493 metres (539 yd) long.