"No nation has a land that can be compared with Olympus mountain, so rich in Myths, historical memories, all kinds of beauties..." Fred Boissonnas

"Olympus"
The name Olympus appears for the first time in the 13th century B.C. Orphic Scripts. The mythical poet and prophet Orpheus talks about Mount Olympus in his hymns.
Four centuries later, Homer mentions Olympus in his two masterpieces Iliad and Odyssey. Later still, the great epic poet Isiodus and many ancient Greek authors similarly make reference to Olympus, identifying it with the Sky (Homer in Odyssey Y 103-113, Apollonius in: Argonautika I 599)

Etymology
The etymology of the name Olympus has many origins.
Markus Mousouros (1470-1517 BC) in the "Etymologicum Magnum Lexicon" writes that Olympus means the sky,
while the name of the high mountain Olympus comes from "Ololambris" (ablaze) as it beseems the sky.

According to linguist and litterateur Menos Filintas (1870-1934) the name Olympus comes from the words Uluwen - Uluen or Ulu which mean high, and the words Bas or Bos which mean power, i.e. the power of God. So "Uluenbas"
or "Ulubos" is the power of the heights, the heavenly, the divine, the sublime power.