According to the account in the book, Rawicz was transported, alongside thousands of others, to Irkutsk and made to walk to the Gulag Camp 303, which was 650 km south of the Arctic Circle. His labour duties in the camp included the construction of the prisoners' barracks, the manufacture of skis for the Russian army, and the repair and operation of the camp commandant's radio. In "The Long Walk", Rawicz describes how he and six companions escaped from the camp in the middle of a blizzard in 1941 and headed south, avoiding towns. The fugitive party included three Polish soldiers, a Latvian landowner, a Lithuanian architect, and an enigmatic US metro engineer called "Mr. Smith"; they were later joined by a 17-year-old Polish girl, Kristina. They journeyed from Siberia to India crossing the Gobi Desert and Himalayas. Four of the group died, two in the Gobi, two in the Himalayas. The book also mentions the spotting of a pair of yeti-like creatures in the Himalayas. According to the book, four survivors of the 11-month trek reached British India around March 1942 and stumbled upon a Gurkha patrol. They were taken to a hospital in Calcutta. Towards the end of the book, Mr. Smith asked Rawicz about his future. Rawicz told Smith he would rejoin the Polish army. Once released from the hospital, the survivors went their own ways. Some were still permanently sick from the hardships of the Long Walk. According to Rawicz, he moved from India to Iraq, then re-entered the Soviet Union in June 1942 and rejoined the Polish Army on 24 July 1942 at Kermini. He then returned to Iraq with Polish troops and moved on to Palestine, where he spent time recovering in a hospital and teaching in a military school. He claimed that General Władysław Anders had recommended his transfer to Britain for training as a pilot of the Polish Air Forces in Great Britain. Soviet records confirm that Rawicz was a Polish soldier imprisoned in the USSR, but differ from "The Long Walk" in detail on the reasons for his arrest and the exact places of imprisonment. Polish Army records show that Rawicz left the USSR directly for Iran in 1942, which contradicts the book's storyline. Aside from matters concerning his health, his arrival in Palestine is verified by the records. The story of the escape to India comes from Rawicz himself. Captain Rupert Mayne, an intelligence officer in Calcutta, years after the war, said that in 1942 he had debriefed three emaciated men claiming to have escaped from a Siberian Gulag camp.