Chris Hemsworth has been spotted filming as the hammer-wielding superhero Thor in a British woodland for the upcoming sequel, The Avengers: Age of Ultron. The Australian actor was seen reprising his role as the muscular God in some woods near Guildford in Surrey.

Chris Hemsworth Thor
Chris Hemsworth's Thor Is Spotted Smashing A Tank With His Hammer Filming 'The Avengers 2.'

Thor is seen bringing his hammer down upon an impressive-looking, futuristic tank in the new on set shots. There have been persistent rumours than the sequel's opening sequence will feature the team attacking Baron Strucker's (Thomas Kretschmann) stronghold somewhere in Europe.

More: Joss Whedon says Ultron is "everything a robot never is."

The group will also do battle with Quicksilver (Aaron Taylor Johnson) and Scarlet Witch (Elizabeth Olsen), who are then recruited to face a joint foe. It has been proposed that the tank is technology from the evil organisation HYDRA, which has a bunker in Europe.

The Avengers Age Of Ultron Tank
A Futuristic-Looking Tank Was Spotted In The Guildford Woods.

A concrete building believed to be said bunker was spotted on set in Surrey, a southern English county where residents have reportedly been warned to expect loud explosions from the film set.

More: Scarlet Witch, Quicksilver and Hawkeye spotted filming 'The Avengers 2.'

The woods, named as Bourne Woods near Farnham, have been used to shoot films such as Gladiator, Robin Hood and War Horse and will provide the backdrop for an Avengers car stunt sequence reports Get Surrey. Apparently, parts of the area will be sprayed with white paint to give the appearance of snow and a host of special effects machines creating wind and smoke will be wheeled in to add atmosphere.

The Avengers 2 Bunker Forest
The Woodland Area Has Been Transformed; Could This Be A HYDRA Bunker?

The movie will re-visit The Avengers who have recruited a few more superheroes - Quicksilver (Aaron Taylor Johnson) and Scarlett Witch (Elizabeth Olsen) - to their team. They reunite to battle the imposing force of a new, robotic villain, Ultron (James Spader).

See more pictures from filming 'The Avengers: Age of Ultron' here.

The Avengers: Age of Ultron will be released on the 25th April 2015 in the UK and the 1st May in the USA.

Chris Hemsworth Filming The Avengers 2 Thor
Local Residents Have Been Warned To Expect Explosions As 'Avengers' Action Scenes Are Filmed.