Did it take Ernest Shackleton and the crew two years to go there and back?

No, it did not take Ernest Shackleton and his crew two years to go there and back. Their famous expedition to Antarctica, known as the Imperial Trans-Antarctic Expedition, began in 1914 and ended in 1917. The crew became stranded on the ice and faced numerous challenges, but the overall duration of the expedition was about 19 months, not two years.