The Adelaide-based writer of almost 50 award-winning titles, including several set in the Star Wars universe, is heading to the extreme climate next week as the Australian Antarctic Division's latest arts fellow.
Williams says he first applied for the hotly-contested fellowship about 20 years ago but decided to give it another crack last year.
The fellows are expected to use their media to give those who may never get to Antarctica a taste of what it is like and Williams already has a book in mind.
The working title, Lone Soul Standing, is inspired by an entry in Australian explorer Douglas Mawson's diary in 1912 in which he likened standing exposed in the Antarctic to standing alone on the surface of Mars.
"That quote connected to an idea I've had rattling around in my brain for a while to combine the heroic age of exploration - like Mawson, Scott, Shackleton - with the dawn of Australia," he said.
"And also with HG Wells' War of the Worlds. Which sounds like an odd fit but really appeals to me."
"The culture and the climate and the penguins of course - the impact of all that sensory information may lead to a newer, better idea that will combine with the old idea to produce something very different," he said.
Williams said the pressure he feels to properly capture Antarctica is similar to the pressure he felt when he aspired to do justice to the Star Wars universe.
"This is a real place that matters to everybody on the planet and to fail to capture it properly would be a great tragedy," he said.
"But I know that I'm up to the task and I'm looking forward to bringing all my skills to bear."
Having been raised in South Australia and spent most of his life living in the dry state, Williams said it was the sheer cold of the trip that he was both most excited and apprehensive about.
"I may hate it. I may love it. I'm excited about putting myself in a position where I will find out shortly," he said.