World's Greatest Mountains (2018)

Episode Overview

The episode explores life in the Mont Blanc region, focusing on a dedicated team responsible for initiating thousands of avalanches annually. It also delves into the remarkable 7.5-mile tunnel that runs through the mountain, an engineering marvel from the 1960s. However, this impressive structure faced a devastating fire in 1999, highlighting the challenges of maintaining such an ambitious project amidst nature's unpredictability.