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A train failed to apply its brakes and crashed through a buffer stop at Once railway station in Buenos Aires, resulting in 51 deaths and more than 700 injuries.

Historical image related to A train failed to apply its brakes and crashed through a buffer stop at Once railway station in Buenos Aires, resulting in 51 deaths and more than 700 injuries. from February 22, 2012

2012 Buenos Aires rail disaster

Fatal Argentine train wreck

The 2012 Buenos Aires rail disaster, also known as the Once Tragedy, occurred on 22 February 2012, when a train crashed at Once Station in the Balvanera neighbourhood of Buenos Aires, Argentina.
Source: Wikipedia (CC BY-SA)

Buffer stop

Device to stop trains at end of track

A buffer stop, bumper, bumping post, bumper block or stopblock (US), is a device to prevent railway vehicles from going past the end of a physical section of track.
Source: Wikipedia (CC BY-SA)

Once railway station

Railway station in Buenos Aires, Argentina

Once railway station is a large railway terminus in central Buenos Aires, Argentina, in the barrio of Balvanera.
Source: Wikipedia (CC BY-SA)