TWO men who walked away from a car crash on the back roads around Wivenhoe Dam claimed to be chasing an alien space craft when found by police.

Police and the driver's insurance company received several sketchy phone calls from the men, who appeared to be convinced paranormal activity caused the crash.

Police received the first call from the men at 2.25am Friday, saying they had been in an accident at Split Yard Creek and asked for the RAAF to attend.

It later became apparent the car had gone off the road and down an embankment near the Split Yard Creek bridge.

As the evening progressed, the men became increasingly agitated and scared of the situation.

The phone call dropped out, and after 30 minutes of trying to contact the men, police received a call from RACQ Insurance.

Police said the conversations with the men were vague and at times barely understandable.

The men began to "freak out", telling the insurance company they were about to disappear and referred to the area as the Bermuda Triangle, police said.

Police called the men back, with the second male answering the phone, telling police there were "some really weird things going on" and they had abandoned the car.

Police received another call from the men at 4am, claiming that "something paranormal" had occurred and "big bright lights" caused the car accident.

Police found the men at 4.10am at the intersection of Wivenhoe-Somerset Rd and Hyne Rd.

They were armed with knives and appeared to be protecting themselves.

The men became aggressive claiming "there were more of them around".

The car's driver was breathalysed. He was over the limit and given a notice to appear in court.

One of the men was charged with assaulting a police officer.