Solar train revives ancient Andes route in Argentina

In the Quebrada de Humahuaca, a UNESCO World Heritage valley in Argentina's Jujuy province, the Tren Solar de la Quebrada has been running since June 2024 — Latin America's first solar-powered train. The train covers 42 kilometers between six villages, from Volcán to Tilcara, along a route that has been used for thousands of years, first by pre-Inca peoples and...