London, March 18 (IANS) It's a discovery that can shed light on the origin of cancer. Archaeologists have unearthed a 3,200-year-old skeleton. The skeleton was unearthed at the once-populated Amara West site, 750 km from Khartoum, Sudan. The skeleton is believed to be of a wealthy man, between age 25 and 35, was found in a tomb close to the River Nile in Sudan.