The collision occurred shortly after 4:30 p.m. Saturday on Highway 29 just north of Twin Pine Casino near Middletown, according to the California Highway Patrol.
The vehicle involved – said to be a white pickup – had been reported all over the roadway about 15 minutes earlier and had nearly gone into oncoming traffic before traveling onto the side of the road, the CHP reported.
According to the report, the pickup then rolled over. A boulder was reported to be in the road and the pickup was on its side.
Major injuries were reported but additional details about the crash were not immediately available Saturday night.
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