Two high-speed trains collided and then derailed Sunday evening in southern Spain, killing at least 21 people and injuring dozens more, according to officials.

The collision occurred near Adamuz on Sunday night.

Officials on Tuesday were struggling to identify bodies from the crash near the southern city of Córdoba, which killed at least 41 people.

Spain’s high-speed train network, the world’s second longest, is a national pride and joy. Whisking passengers across a large country, it is a daily convenience and a symbol of modernity and efficiency.