This is the heartbreaking last selfie of a group of students just moments before their bus plunged off a bridge killing at least 10 of them.

The horrific crash came while a bus was taking engineering students and professors from Alexander von Humboldt University in Quindio, Colombia, on a field trip.

The bus was reportedly winding its way down a notoriously risky spiral bridge on the La Ligna road when it smashed through a crash barrier falling 30 feet to the ground.

Horrified witnesses say they saw passengers flying out through windows and doors as the coach burst apart like a crushed egg carton in the crash on 24th May.

Police say 10 of the passengers onboard died and a further 25 were injured and rushed to hospital, many critically injured.

The youngest victim was just 17 years old.

They have been named as Daniel Felipe Arias Garcia, Alejandro Villada Ospina, Jorge Ivan Ocampo, Juan Jose Restrepo Gomez, Deiver Felipe Vargas, Anyie Milena Ocampo, Yeison Andres Parra Giraldo, Thylan Marin Munoz, Luis Enrique Valencia, and Andres Felipe Villero.

Grim video footage of the wreckage shows blood-stained seats, smashed windows and the entire body of the bus torn apart by the fall.

It is a long way from the smiling snap of students taken as the were setting off with many flashing peace signs.

State police commander Colonel Luis Fernando Atuesta told local media: "The driver lost control and fell off the bridge through the barriers flinging out some of the students."

President Gustavo Petro posted a message of condolence, calling the crash a "terrible accident".

The coil-shaped bridge is notorious as one of the most terrifying drives in the country for it sharp bends and steep drops.

A Transport Ministry statement said: “We deeply regret the accident that occurred in the sector of the helicoidal bridge.

"We are working to support the investigations that will allow to determine the cause."

Police are investigating the crash.

(MJ Leidig/newsX)