Underground Andes Lab to Tackle Unresolved Dark Matter Mystery

High up in the Andes mountains, civil engineers are laying out plans to build an almost nine-mile-long tunnel connecting Chile and Argentina. Once completed, the Agua Negra tunnel will be the sixth longest underground road in the world. There will be points along the way where cars will be driving more than a mile below Earth's surface. It's going to be an amazing engineering achievement to build. It's also going to be the perfect place for a new underground physics laboratory that could res...