An author enjoyed an audience with a difference when he launched his new thriller in front of 4,000 emperor penguins.
Explorer and writer Patrick Woodhead unveiled his novel, Beneath The Ice, in Dronning Maud Land in Antarctica.
The novel, the author and professional climber's third, is set against an Antarctica backdrop.
Woodhead, who traversed Antarctica East to West in 2002, joked of the world's "most southerly book launch": "It's the only book launch I've done where everyone turned up in black tie.
"There was a lot of penguin queue-jumping at first, but then they became more orderly. Without any competitors, I'm feeling really confident about topping the chart in the Antarctic best-seller lists!"
The author, who also trekked to an ice cave to sell his book to passing explorers and scientists, said: "In minus 20C, it was a challenge signing books as my pen froze. Then my fingers froze to my pen. I had to insist on only writing short dedications."
Beneath The Ice is published by Penguin Random House on January 1.