For the second time in less than a month, two children were injured after the "bounce house" they were playing in went airborne.

The most recent incident took place Saturday during the Rocky Mountain Lacrosse Jamboree at a park in Littleton, Colorado. Witnesses say the bounce house was blown about 300 feet across the park before it finally came to a stop.

"All of a sudden, it picks up, and there's a girl going down the slide. She flies about eight feet in the air," Vanessa Atencio told KUSA. The girl was ejected instantly, according to Atencio, though the house continued to roll across the park.

"As the wind picked up, it would tumble," another witness said. "Like a bag in the wind."

A 10-year-old boy was trapped inside as the house blew across the lacrosse fields.

"They said that he just looked really beat up and shook up," Aleah Horstman told KUSA.

The girl was treated for minor injuries at the scene; the boy was taken to a local hospital for an evaluation, but avoided any serious injuries.

Last month, two children were hospitalized after a bounce house in New York was flung 50 feet in the air.

[Image via Aleah Hortsman/KUSA]