(From L) ETH Zurich Master students Alessandro Profeta, Alba Zappone and ETH Zurich doctoral students Fiona Dresler-Dorn and Lu Tian examine the cracks in the BedrettoLab tunnel, a unique underground research facility operated by the Federal Institute of Technology Zurich (ETH Zurich) located 1500m beneath the Swiss Alps within a 5.2 km tunnel near Bedretto, on April 29, 2026. Researchers have made the ground shake triggering thousands of tiny earthquakes in a monitored setting, as they seek to discover seismicity insights that can reduce risks. (Photo by Ennio LEANZA / AFP via Getty Images)