The natural  phenomenon of the rocks it is not mentioned at all in the Greek mythology and neither by a Greek or foreign historian.
Since one thousand year ago started  different geologists and  historians being curious about the formation of the rocks expressing at the same time many theories.
The most prevalent theory is  that of an German  geologist called Fillipson  and he came in Greece towards the end of the ninetieth (19th) century. According to his theory a big - large river had his estuary , for millions of years, in this narrow and deep sea section. Earth matter and lots of stones where brought by water in his estuary  and lots of other matter where brought in the area from the central primordial Europe. The accumulation finally reached an end and  cone-shaped delta  was formulated.
25-30 million years ago and after many geological changes that took place during the eons, was risen the central part of the today Greece, and the  formation of valley  Tempi  took place. The result was all the water to be thrown to the today see of Egeon.
During the tertiary period and   during the alpine foldings cut off  massive solid boulders  of rocks from the newly formed  Pindos range mountain and with the passing of eons the Pinios valley was formed between  the Pindos mountain and the rocks of Meteora.
The continuous erosion of wind and rain as the geological changes through the eon put the rocks in their today’s shape.
In the cavities,  crevices and  tops of the rocks  found shelter many times the indigenous people , during raids of different conquerors that came in the area. 
In these rocks found shelter many daring hermits and recluses seeking the spiritual  peace of mind though prayer seeking the light of perfection of the orthodox

Christian faith.
In the beginning the hermits were isolated and they were praying in the so called  “prosefxadia” not only for their salvation but for the salvation of all people. Their life was very simple and their work hard. When the rocks were inhabited it is not known, but according to the existing scriptures seems like when the monastic life was already organized. According to the Byzantine writers  the first hermits must have found shelter in the rocks  towards the end of the first millennium.
 According to some information it is said that the first hermit was someone called  Varnavas  around 950-970  after Christ and he had founded the cloister (hermitage) of  Holy  Spirit. Then follows the foundation of the Transfiguration cloister by the monk called Androniko the Cretan in the beginning of the first millennium after Christ. Finally  around 1150-1160 the central cloister of Doupiani or Stagon was founded.
Besides the above mentioned  cloisters there were many others in the cavities and hollows of many rocks like, around Dupiani rock, rock of Holy Spirit and the rock of Sourloti. In the beginning of the 12th  century, in the Meteora area a small asceticism community was organized  having centred around the small church of Theotokos. This church constitutes the “Kiriako or Protato (first in order) and it is being  saved till today. His position is south of the rock called Dupiani.
In this small church flocked in from their individual hermitages the ascetics to worship God the creator  and to talk about problems , matters of the time  and to ask the help of other ascetics to compete and bring to an end difficult tasks. The leader of the cloister of Dupiani or Stagon used to be called “The First” and he was the abbot in the monastery of  Dupiani.
After two hundreds years and towards the middle of the 14th  century (1340-1350) the monastery of The Transfiguration of Christ was set up by the holy monk called  Athanasios. He renamed ,  the rock where he founded his monastery , from big flat rock to Meteoro. Since then all the rock have the name Meteora.
After that and during the period of the next two centuries we will have the foundation of many monasteries in the area like:  Holy Monastery of Varlaam, Holy Monastery of Holy Trinity, Holy Monastery of Saint Stefano, Holy Monastery of Ipapandis, Holy Monastery of Roussanou, Holy Monastery of Saint George Mandilas (handkerchief) , Holy Monastery of Saint Nicolas Anapafsas, Holy Monastery of  Holy Mother in Mikani, Holy Monastery of Saint Theodoron, Holy Monastery of Saint Nicolas of Badovas, Holy Monastery of the Holy Apostles, Holy Monastery of Saint Gregory, Holy Monastery of Saint Andonios, Holy Monastery of the Almighty, Holy Monastery of Saint John The Baptist, Holy Monastery of Ipsiloteras or Kalligrapher, Holy Monastery of Modestos  Aliseos, Holy Monastery of Saint Peter, Holy Monastery of Saint Dimitrios  Kallostratis , Holy Monastery of Taksiarxon and Bounila.
In the middle of 14th century became very active in the area the abbot of the Monastery of Stagon or Dupiani , priest called Nilos. He founde the Monastery of  the Ascension of Christ  (today’s name is  Ipapanti) with very important frescos.
The first ascetics climbed the rocks using scaffoldings  that they used to secure them with  beams wedged in holes in the rock.
Later they used  rope – ladders and the net until the beginning of the 20th century when the first sters where carved in the rocks.
With the passing of time and the difficulties and hard ship of those years , as the raids of different conqueror , brought many of the monasteries into decline. Many others where abandoned and destroyed  (decline period : after the 17th century).
Today they are continuing  unceasingly the tradition of the Orthodox Church than more of 600 years the Monastery of Grand Meteoro or Transfuguration  or the Saviour , as the Holy Monastery of Varlaam, as the Holy Monastery of Saint Stefano, as the Holy Monastery  of Holy Trinity, as the Holy Monastery of Saint Nicolas Anapapsas, and the Holy Monastery of Roussanou.
Besides the noble ambition of the today’s monks – nuns ,the Metropolitan Bishop of the area and the contribution of the European Union as well as of different citizen  have many of the Holy Monasteries been restored and renovated