The olive tree first appeared thousands of years ago in the Mediterranean Basin, and from there it spread to all neighboring countries.
It is believed, that ever since the Neolithic Age, the collection of both edible and wild olives (Olea europaea oleaster) was practiced in the Aegean area. The oldest samples of olive pollen found so far can be dated to the end of the Neolithic Age and they come from Crete and Boiotia.
50000 years old fossilized leaves of the European Olive Tree were discovered on Nisyros, Cyme and Santorini.
According to Ancient Greek Mythology, the olive tree was a present of goddess Athena to the city of Athens, when competition between her and god Poseidon took place to decide the patron deity of the city. When the competition started, god Poseidon struck the sacred rock of the Acropolis hill with his trident causing a spring of salty water to emerge. This spring was known as the Sea of Erechtheus. Athena, with her turn, struck the rock and an olive tree full of olive fruits sprang, which was regarded as a promise of glory and prosperity for the city.
The oldest examples of systematic olive tree cultivation and olive oil production come from the eastern Mediterranean Basin and in particular from Palestine.
The stone presses, which were discovered in the area of Haifa in Israel and can be dated to the 5th millennium BC, are related to olive oil production.
In all likelihood, the Phoenicians were the first to distribute the olive tree cultivation to the Mediterranean Basin and also the first to produce olive oil by using the same technique as the Egyptians who extracted oil out of seeds.
The clay tablets found in the Mycenaean palaces of Crete and mainland Greece provide us with information about olive tree cultivation, and olive oil production and distribution. These tablets are written in the first Greek writing, which is a syllabic script conventionally named Linear B.
Since the very ancient years, the olive tree appears in myths, history and material culture of the nations and the countries where it grows. The olive tree stood always as a symbol of prosperity, fertility and peace. The social importance of the olive tree can be demonstrated by the fact that in ancient Greece the winners of the Olympic Games were crowned with an olive wreath and they were rewarded with olive oil.
From an early period, the Greek nation was associated with the olive tree and olive oil. They were both connected with many aspects of life and they were a part of the Greek social, economic and artistic expression. Soon, the Greeks started more and more techniques of usage, and they discovered both the therapeutic and cosmetic properties of olive oil. It is still used even today in many beauty products.
The olive tree is considered a blessed tree and every part of it can be exploited. Today, apart from its fruit, wood and leaves, olive processing waste can be also used in the industry.