Mountaineer Mark Inglis will leave New Zealand on Saturday with the aim of climbing to the top of Mount Everest.
If successful, he will be the first double amputee to do so.
Inglis had both legs amputated below the knee after being trapped on Mount Cook in 1982 but he says his disability won't be the deciding factor.
"Once you get up to 8000 metres it becomes a lottery really. It doesn't matter how strong you are, how big you are, how fit you are. It becomes a lottery and how well you've planned."
Inglis says he will be using the expedition to raise funds for a limb centre in Cambodia.
He will spend the next month acclimatising before starting the climb in May.