Two men have claimed they were stalked in a tunnel by a three metre beast they believed to be a yowie in regional New South Wales.

Australian Yowie Hunters has shared incredible audio the men recorded of the creature in Newnes, in the NSW Central Tablelands, in the early hours of March 23.

Captured in the popular Glow Worm Tunnel in Wollemi National Park near Lithgow, the mythical beast which is Australia's version of Bigfoot can't be seen in the footage but makes presence known with its loud eerie howl.

Two men claimed they were stalked by a yowie in this Newnes glow worm tunnel in March

'The two men said they the creature was trying to conceal itself at the time, however they managed to see the shape of it. Nearly 10ft tall in estimate and 4ft across the chest,' Australian Yowie Hunters posted on Facebook.

Australia's top spots to find a yowie: Source: Australian Yowie Research

'It was also making a grunting sound as it was sneaking along behind them, which they didn't manage to capture in time. They were both very frightened and ran two kilometres back to their vehicle.'

The group added it sent a copy to renowned wildlife expert and cryptozoologist Gary Opit, who told them he believes it's the best yowie audio he has heard 'without question.'

Most people who commented on the Australian Yowie Hunters Facebook post believed the audio was real.

'That gives me chills,' one woman commented.

The men told Australia Yowie Research the yowie made a grunting sound as it was sneaking along behind them in the Glow Worm Tunnel (pictured)

Newnes is a 90 minute drive north of the Blue Mountains, which has recorded the most yowie sightings in Australia, according to Australian Yowie Research.

The reported sighting in Newnes follows a series of Queensland locals who claimed they had spotted the mythical beasts in recent weeks.

A fortnight ago, a family from southeast Queensland believe they are being terrorised by the mythical creature after hearing disturbing loud noises come from their yard.

Last week, a mother from Tarzali, in the Tablelands Region of Queensland, claimed to have been visited by a 'friendly' group of yowies who gifted her macadamia nuts.

The audio recorded in Newnes, a 90 minute drive north of the Blue Mountains, which has recorded the most yowie sightings in Australia. Pictured is an alleged sighting in Queensland

The audio recorded in the Glow Worm Tunnel (pictured) was forwarded to renowned wildlife expert and cryptozoologist Gary Opit, who believes it's the best yowie audio he has heard

Dean Harrison from Australian Yowie Research has dedicated his life to chasing yowies after he first came across the mythical beast in 1995.

'I wanted answers,' the Gold Coast resident recently told Daily Mail Australia.

Over the past 25 years Mr Harrison claims he has had several encounters with yowies, which are similar to the Sasquatch or Bigfoot in the United States.

The first reported sighting was in Sydney in 1790, there were a number of other sightings reported in the area in the preceding decade.

Mr Harrison believes there are two types of Yowie species in Australia. The larger stands at around 6-10ft tall. The smaller species stands about 4-5ft tall.