Agua Negra Tunnel: Andes Megaproject to Provide Year-Round Chile-Argentina Transit

The Agua Negra tunnel megaproject, at 4,000 meters altitude, aims to bore through the Andes to create a permanent transit route between Chile and Argentina, overcoming winter closures that currently block passage for most of the year. The project highlights tourist interaction and commercial flow as key objectives. Construction status and timeline remain uncertain, but the tunnel would significantly enhance cross-Andean connectivity and trade.