Road policing officers are appealing for information following a serious crash on the A82 just outside Crianlarich.
The incident happened around 8.30am this morning and involved a silver Honda motorcycle and a white Clio.
Emergency services attended and a 40-year-old man, the rider of the motorcycle, was taken to Glasgow's Queen Elizabeth University Hospital with serious injuries.
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Police described his condition as stable. No one else was injured.
The road was closed for vehicle recovery and crash investigation work and re-opened around 2.10pm.
