Thor star Natalie Portman has been spotted exploring the Blue Mountains.

The Hollywood actor, who has been busy filming Thor: Love and Thunder in Sydney, recently embarked on a trip to rural NSW with her husband Benjamin Milipied and their children Aleph, nine, and Amalia, three.

Portman shared a rare photo with her French choreographer husband on Instagram, in what appeared to be a sponsored post with Visit NSW and One & Only Wolgan Valley.

"Favorite person to explore the Blue Mountains with … @visitnsw #loveNSW @wolganv," she captioned the photo.

Portman and her family are understood to be staying at the luxurious Emirates One & Only Wolgan Valley, where fellow actor Idris Elba was spotted last month.

Accommodation rates start from $3000 and can cost up to $12,000 per night.

The Israeli-born star arrived from the US six months ago ahead of filming for Thor, however production on the Marvel blockbuster was delayed until this year due to the COVID-19 pandemic.

Portman, 39, previously commended the federal government's handling of COVID-19 during an appearance on US talk show Jimmy Kimmel Live.

"The government has done a really, really incredible job … very grateful to get the opportunity to live like [normal]," she said.

"It's so different, all the animals are different, the trees are different, even the birds - there's like multi-coloured parrots flying around like pigeons. It's wild."

A rep for Portman denied reports claiming the Black Swan star and her family are considering a permanent move Down Under.

"Ms Portman is in town to shoot the film," a spokeswoman said.

Originally published as Sponsored content? Portman reveals luxury NSW stay