The Amphictyonic council usually assembled at Onchestus, in the territory of Haliartus, near the lake Copais, and the Teneric plain. It is situated on a height, devoid of trees, where is a temple of Neptune also without trees. For the poets, for the sake of ornament, called all sacred places groves, although they were without trees. Such is the language of Pindar, when speaking of Apollo: “‘He traversed in his onward way the earth and sea; he stood upon the heights of the lofty mountains; he shook the caves in their deep recesses, and overthrew the foundations of the sacred groves’ or temples.” As Alcæus is mistaken in the altering the name of the river Cuarius, so he makes a great error in placing Onchestus at the extremities of Helicon, whereas it is situated very far from this mountain.