Police Scotland are appealing for witnesses after a “serious” crash between a lorry and van on the A83 at Inveraray.
The road was closed in both directions yesterday on the Argyll Glasgow route after emergency services were called to the scene at 9.50am.
Police, ambulance and the fire service were all in attendance where the two large vehicles collided.
An air ambulance was in use as 66-year-old man was taken to Queen Elizabeth Hospital where his condition is described as serious.
Another man, 64, was also taken to Mid-Argyll Hospital but was released shortly after.
Road users were not able to access the route until 9pm the same night.
Police appealing to public for information
Cops are now appealing to anyone who might have information about the incident.
Those with dash-cams are particularly encouraged to get in touch.
Sergeant Scott Miller from the Road Policing Unit at Dumbarton said: “Our enquiries are ongoing to establish exactly what happened and I’d appeal to anyone who saw the crash to come forward.
“Perhaps you were in the area at the time and have dashcam footage. Please review this and bring anything of significance to our attention.”
Anyone with information is urged to contact 101 quoting reference 0875 of December 18.