While passing "Marathon of the sands" through the Sahara in 1994, Italian police Mauro Prosperi lost his way and wandered in the wilderness. When he has run out of water, he decided to commit suicide by cutting his veins. But due to lack of water in the body the blood was too thick and quickly curled. Apparently, considering it as a sign, Mauro found the strength to continue his journey. After 5 days, the nomads family found him.To survive, a marathon runner drunk urine and blood of bats, which he found in a Muslim shrine. Mauro spent 9 days in the desert in total. During his wanderings he had lost 18 kg.