What geographical discoveries did Herodotus make?

Herodotus can be called the first geographer. For the purpose of writing his book, he traveled all the famous countries of his time: Greece, Southern Italy, Asia Minor, Egypt, Babylon, Persia, visited many islands of the Mediterranean Sea, visited the Black Sea, visited the Crimea and the country of the Scythians, where he described the area in detail and customs.
He collected information about the peculiarities of the climate of the African region: floods of the Nile, droughts. Described crocodiles, birds, hippos. He studied the pyramids and the Sphinx, measured the pyramid of Cheops.