A 38-year-old man has been charged with several drug offences after Queensland police allegedly found an estimated $2 million worth of the drug ice hidden under frozen food in a camping fridge.

Officers stopped the four-wheel-drive for a random breath test just outside Charters Towers in north Queensland on Saturday night.

Police said the man's behaviour prompted them to search his car, which led to the discovery of two 1-kilogram packages of methylamphetamine.

One of the bags of methylamphetamine found by police. ( Supplied: Queensland Police )

The stash, which is described by police as "one of the biggest busts" for the region, translates to about 20,000 hits at street level.

A search warrant was then executed at a property at nearby Southern Cross where officers said they found two clip-seal bags of methylamphetamine, just under $12,000 in cash, and drug paraphernalia.

Senior Sergeant Jason Shepherd believed the drugs were en route to Townsville.

"Obviously 2 kilograms of ice that didn't make it to Townsville is what we would regard as a significant disruption to the drug trade in Townsville," he said.

He said there was "definitely" a connection to a major drug operation.

"To be 2 kilograms which is very, very expensive even at the beginning end to purchase it has to be part of a major operation and that's obviously what's going to be investigated further now."

The investigation has been handed over to Major and Organised Crimes Squad in Townsville.

The 38-year-old was due to appear in Townsville Magistrates court on Monday.