It looks like Alexander Skarsgard, who went nude for the "True Blood" season 6 finale is back to his old ways as the Swedish actor stripped down to his birthday suit yet again in mid-December.

According to E! News, Inge Solheim, who was the actor's team's guide on the Walking with the Wounded Challenge in the South Pole, posted a naked snapshot of Skarsgard to Instagram on Tuesday, January 7th. The picture features the HBO star deep in thought as he reads a book while sitting on an outdoor toilet.

Attached to the photo that was taken after the actor had reached the South Pole in Antarctica was the caption, "#southpole -30C What are you reading Alex? The script for season 7 of #truebloodHBO?"

Actually this was not the first time the actor has been outdoors reading in the nude. Alexander Skarsgard exposed his penis on the 70th episode of "True Blood" titled, "Radioactive."

The episode which premiered on HBO August 18, 2013 featured the 6-foot-4 blond going full frontal, a decision he made last minute.

In September 2013 costar Stephen Moyer explained the scene. He said, "It was never written to have him full frontal. Alex doesn't like wearing his 'sock' or the 'sack of destiny' as we call it.

"It's the sack of destiny that covers everything," adding, "He doesn't like wearing those, so he had one in his room that day, [but] he was the one who chose not to wear it."

Moyer also said that the crew attempted and failed at some "camera trickery" to hide Skarsgard's modesty. But the star who brought Eric Northman to life admitted that nudity has never been a big deal in his family.

He said, "My dad and his side of the family are old hippies. I was 14 the first time I saw my dad wearing pants," adding, "He was always naked."

To see the photo of Alexander Skarsgard nude on Instagram click HERE.