A large number of cattle have been killed or euthanised following a truck crash in the Upper Murray.
Emergency services received a call to the Murray Valley Highway at Shelley shortly before 11am on Tuesday.
A cattle truck on a notorious stretch of the highway failed to negotiate a bend, causing the vehicle to roll.
The vehicle had been transporting 40 to 50 cattle, half of which were killed on impact or needed to be euthanised.
Police spent 10 hours at the scene removing the stock and clearing the wreckage, with SES volunteers needed to cut open the truck.
The vehicle was unable to be returned upright while the animals were onboard.
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"It was a massive rescue operation, trying to salvage as much as possible," Senior Constable Marc Gould said.
"The road was closed for much of the afternoon.
"The driver was taken to hospital."
A large number of trucks have crashed on the road, east of the Koetong Hotel.
Senior Constable Gould said police were seeking witnesses and those who saw the truck before the crash.
Call (02) 6076 1666.