Torre del Bierzo rail disaster
1944 CE.
Shown on the map at 42.594°, -6.339°.
The Torre del Bierzo rail disaster occurred on 3 January 1944 near the village of Torre del Bierzo in the El Bierzo region of Spain's León province when three trains collided and caught fire inside a tunnel. Although the official death toll was 78, and at the time it was estimated to be 200–250, the most recent study has estimated it at no more than 100.
Text from the Wikipedia article Torre del Bierzo rail disaster, licensed CC BY-SA 4.0.