Video has emerged of a toddler who climbed onto a conveyor belt scrambling over suitcases during his wild ride on a luggage chute, which took him underground inside the world's busiest airport.

Key points: The two-year-old is shown climbing onto the luggage belt and disappearing

The two-year-old is shown climbing onto the luggage belt and disappearing Workers got him off the conveyor when he dropped into a screening room

Workers got him off the conveyor when he dropped into a screening room The child's hand was fractured but he is otherwise fine

Edith Vega's son Lorenzo, 2, climbed aboard the belt when she briefly set him down to print a boarding pass at Hartsfield-Jackson Atlanta International Airport, she told police.

Security video later released by the airport shows some of what happened next.

One camera recorded Lorenzo disappearing feet-first through a rubber curtain, beyond the reach of his mother and an airport worker.

Video then shows him crawling over bags, trying to avoid being pulled through a large screening machine that resembles a darkened cave above the conveyor belt. But the conveyor is too fast, and it pulls him inside.

Security cameras captured Lorenzo trying to climb over luggage to escape a screening machine. ( Hartsfield-Jackson Atlanta International Airport via Storyful )

He pops out on the other side, only to tumble down into another room where startled security workers pluck him from the belt and give him hugs.

The screening machine had detected a problem, and diverted the child on a path for bags in need of more checks, TSA spokesman Mark Howell said Thursday. That's when workers rushed to help, the video shows.

"The officers who work down there, almost all of them are parents," Mr Howell said.

"Their initial instinct was to get that kid back to the mom. They kicked into overdrive to try and get him upstairs."

Mr Howell spoke with some of the workers who were on duty that day in the noisy baggage area, who recalled hearing what they thought was a cat screaming. Once they saw the child, they raced to his aid, the video shows.

Lorenzo injured his hand while travelling along the luggage belt. ( Hartsfield-Jackson Atlanta International Airport via Storyful )

"It was quite a moment that really brought perspective to life and how important life is," one of the TSA workers, Christopher Strickland, told ABC's Good Morning America .

The child's hand was fractured, but he's otherwise OK, authorities said.

"I'm thankful he's alive," Ms Vega told WSB-TV.

"That's all that goes through my mind. I'm just grateful he's here."