The Negrón Tunnel is an automotive tunnel which connects the provinces of Asturias and León in Northern Spain. The tunnel is 4,144 metres long and reaches a height of 1,229 metres .
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.
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Copyright: Creative Commons 3.0
Address: León, Spain
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