Terrifying moment bouncy castle takes off in freak wind flying 40ft into air sending children plunging back to earth

THIS is the terrifying moment a freak wind blew a bouncy castle 40ft into the air sending children plunging to the ground.

The shocking footage shows children falling from the inflatable as onlookers scream in horror.

The incident happened when an unexpected gust blew the castle into the sky at a fundraising day at a school in South Africa .

Instead of dropping back down to earth , the video shows the inflatable continuing to spiral upwards over Laerskool Protearif primary at Krugersdorp.

But the most heart-stopping moment comes when two kids fall off the floating castle.

Terrified parents scramble to break their fall as they drop from the inflatable, no longer able to cling on.

While the onlookers managed to form a human crash mat, the two kids are still reported to have been