Temple built on a volcano. Oxylithos took its name from the words "Acid-Stone", that is, from the pointed stone at the top of Olythithos, the fallen volcano that dominates the wider region. There, on the slopes, 200 years ago, the worthy inhabitants of the village, carrying the stones with their hands, raised the picturesque Church of the "Virgin Mary of Oxilithiotes". In order to protect them the Archontopanagia and to "embrace" the land and the sea that stretches before its temple. Somewhere there in the caves of the volcano, he found a temporary shelter and Saint Nicodemus the Athonite when he practiced against the island "Skikopoula" and wrote the famous book "Counseling Manual or About the Prison of the Five Senses" to the then Bishop Evripos (Chalkis) Ierotheos and his cousin. There, Saint Nektarios, as the Preacher of Karystia, often worked in the Holy Church of the humble church. There is the miraculous icon of Saints Ioakeim and Anna, in a "SPANIA" form of art and hagiography. The Virgin is portrayed embracing her tenderly with her two hands, her Father, and Saint Anna with her two hands outstripped to obey Saint Joachim to give her her child. The most important of all is that in the icon of the Virgin, in her humble temple, thousands of believers worshiped, lit a candle, silently prayed, shed a tear, asked for mediation, protection and help of the Virgin Mary ... The chapel celebrates each year on March 25th and gathers crowds of people. The Evening takes place on the 25th of March and the impressive brilliance of the little Oxylite students. On the day of the feast, Orthros and Divine function are fulfilled. THE VOLCANO The Oxylithos volcano has been studied by many researchers, mainly Italians and Greeks, because it is considered to be the most obvious residue of volcanic activity in the wider region of the central Aegean. From the exploration of the volcanic rocks (mainly dikes and less andessites) it appeared to be rocks that were created about eleven million years ago. The hills of the volcanic rocks on the southwest side of the volcano. Along the hilly range there are sources of short to medium supply, which give excellent water quality. One of them propelled Oxylithos from 1929 to 1980.