Five cars overturned on Bodmin Moor in Cornwall when they hit ice during a hail storm.
Four cars were badly damaged
The A30 at Bolventor was closed for about four hours at 2152 BST on Thursday after the cars flipped in separate crashes.
One woman was taken to the Royal Cornwall Hospital at Treliske with suspected minor stomach injuries.
Police said they were "amazed" only one person was injured. The crashes left four of the cars badly damaged.