The roar was deafening inside the train car as it hurtled off the tracks, then slid down a steep slope, ripping open its frame.

Two high-speed trains collided on Sunday in southern Spain, killing at least 40 people and injuring dozens of others, according to the local authorities.

Officials said they had located a previously unreported train undercarriage down a gully near the site of a train crash in Spain that killed 42 people.

Spain’s Transport Minister Óscar Puente updated the death toll to 21 confirmed victims after midnight when he said that rescues had removed all the survivors.