Incident Overview
A glider pilot was conducting a local sightseeing flight, flying south at an altitude of approximately 300 to 500 feet above a ridge while searching for lift. Unable to find sufficient lift in the area east of the ridge, the pilot flew to the west side. Upon reaching the west side, the glider encountered a strong down draft.
Sequence of Events
The down draft caused a loss of altitude, preventing the pilot from returning to the airport. A forced landing was executed on a road that was lined with grapevines. The fuselage of the glider remained centered on the road, but the wings collided with the grapevines lining the road.
Outcome
The glider's fuselage stayed on the road, while the wings made contact with the grapevines. The source does not specify any injuries or further damage.