A high-speed train derailed and hurtled into another train in Spain on Sunday evening, killing at least 39 people and leaving dozens more injured in one of the country’s worst rail disasters in more than a decade.

A violent jolt, followed by screams, flying objects, blood and then darkness is how survivors of the train crash in southern Spain on Sunday night described the moment of impact in the high-speed coll...

The rear cars of that train fell into the opposite track, where it collided with an incoming train operated by Spain’s national rail company, which was bound for the southern city of Huelva, west of S...