TWO men who walked away from a car crash near Brisbane's Wivenhoe Dam claimed to be chasing an alien spacecraft 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.

Illustration: Matt Golding.

Police received the first call from the men at 2.25am on 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.