One of the bombings that hit Kabul airport on Aug. 26 targeted a canal where large crowds of people were waiting near the Abbey Gate to enter the facility. (AP)

Within seconds, Thursday’s bomb attack transformed a canal that flowed by the blast walls of Kabul’s international airport into a graveyard, according to a video of the aftermath that was posted to social media. In one section, twisted bodies, mostly of young men, lay piled atop each other, some faces frozen in agony.

In another section, bodies were partly submerged in the water. One man tried to pick up an unconscious youth, calling him as “bacha” — child. Nearby, the wounded, their faces bloodied, were being helped up by those physically untouched by the blast.

Moments before, the victims all shared something in common: a desire to leave their country and the uncertainty of life under the Taliban. They had waited for hours, perhaps days, for an opportunity to enter the airport through Abbey Gate, controlled by American forces. They were young and old, women and men, children and babies.

At least 13 people were killed in the explosions, Taliban spokesman Zabihullah Mujahid said. It was unclear whether the U.S. service members killed were included in the death toll.

Those who survived the twin bombing, depicted in videos and photos posted on social media, managed to stagger away, their bodies covered in blood. Some were rolled away in wheelbarrows and taken to emergency wards, already crowded with patients, where crowds gathered to learn of the fates of their loved ones.

“Our hospital in Kabul was already 80% full before the explosions. Now we added extra beds to admit wounded people coming from the airport in life-threatening conditions,” said Rosella Miccio, the head of Emergency, a medical charity that helps victims of war, in a statement the group posted to Twitter.

In a separate statement, the organization quoted a medical coordinator at its hospital in Kabul describing the scenes he witnessed there.

“Those who arrived could not speak, many were terrified, their eyes totally lost in emptiness, their gaze blank,” the coordinator, identified as Alberto, was quoted as saying. “Rarely have we seen such a situation.”