Negrón Tunnel
Entrance to Negrón tunnel from León | |
| Overview | |
|---|---|
| Location | Asturias and León |
| Coordinates | 42°57′37″N 5°50′17″W / 42.96028°N 5.83806°W |
| Route | AP-66, as part of A-66 |
| Start | Lena |
| End | Sena de Luna |
| Operation | |
| Work begun | June 1976 |
| Opened | June 1997 |
| Operator | Aucalsa |
| Traffic | Automotive |
| Toll | €13.05 |
| Technical | |
| Length | 4,144 metres (13,596 ft) |
| Highest elevation | 1,229 metres (4,032 ft) |
The Negrón Tunnel (Spanish: Túnel del Negrón) is an automotive tunnel which connects the provinces of Asturias and León in Northern Spain. The tunnel is 4,144 metres (13,596 ft) long and reaches a height of 1,229 metres (4,032 ft).
The tunnel is in the toll highway AP-66, which is part of the Autovía A-66, one of the longest highways in Spain. The tunnel provides an alternate route to the Puerto de Pajares, a mountain pass that is considered dangerous for motorists.