The 1911 Sarez earthquake occurred at 18:41 UTC on 18 February in the central Pamir Mountains in the Rushon District of eastern Tajikistan. It had an estimated magnitude of 7.4 on the surface-wave magnitude scale and a maximum felt intensity of about IX (Violent) on the Mercalli intensity scale. It triggered a massive landslide, blocking the Murghab River and forming the Usoi Dam, the tallest dam in the world, creating Sarez Lake. The earthquake and related landslides destroyed many buildings and killed about 100 people. Magnitude 7.2 (mw), 15 km deep, 120 km W of Murghob, Tajikistan — 38.29°N, 72.60°E. February 18, 1911 at 18:41 UTC. Wiki link https://earthquake.usgs.gov/earthquakes/eventpage/iscgem16958134 Data: US Geological Survey (public domain).