The redness in the Nile could have actually been pollution caused by volcanic activity, specifically that of Santorini, which erupted around 1500 B.C. and whose ash is found in the Nile region. The silt could make the Nile turn blood red, and would also render it undrinkable. Heavy rains in the red-soiled area of Lake Victoria could have caused reddened water to wash downstream.
在美一方: The redness in the Nile could have actually been pollution caused by volcanic activity, specifically that of Santorini, which erupted around 1500 B.C