The Santiago de Compostela derailment occurred on July 24, 2013, when a high-speed train derailed near the city of Santiago de Compostela in northwest Spain. The train was traveling at a high speed when it entered a curve, leading to the accident that resulted in 79 fatalities and over 140 injuries. The incident raised concerns about railway safety and prompted investigations into the train's speed and the effectiveness of the signaling system. The train was operated by Renfe, Spain's national railway company, and the driver was later found guilty of multiple charges related to the crash.