A rock slide two kilometres north of Summerland, in B.C.'s Okanagan, that  temporarily closed Highway 97 for about an hour over the noon hour Sunday caused major traffic delays for hours.

The highway reopened to single lane alternating traffic about an hour after the slide, but it was extremely slow going and there were long line-ups.

B.C. Ambulance Operations Manager Mark King said falling rocks hit a car causing the airbags in the vehicle to deploy.

"There was no one trapped," he said. "No one was actually pinned in the vehicle. We took two patients from the single vehicle to the Penticton Hospital on a routine basis with minor injuries."

The online Okanagan website Castanet.net was reporting a female passenger in the vehicle suffered head lacerations.

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A rockslide 2 kilometres north of Summerland,B.C. has Highway 97 down to single lane alternating traffic. (Shane Code/Twitter)

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A rockslide 2 kilometres north of Summerland has Highway 97 down to single lane alternating traffic. (DriveBC)