The ancient poet Hesiod (800 to 700 b.c.) the second most important ancient poet after Homer, in his epic poem Theogony (184-187) is describing the mythological birth of the Giands.
As their place of birth he gives the land of Phlegra (Land of Fire). The lyric poet Pindar calls Phlegrean Fields the land, were the battle between the Olympians and the Giands was fought.
Phlegra the land of birth of the Giants and the battleground between then and the Gods of Olympus is the most Ancient name of Pallini (today´s Kassandra peninsula) and was inhabited by the Thracian Crousi, allies of Troy whom Aeneas met fleeing Troy.
If we take into account the etymologies of the words Phlegra and Pallini wich are connected with the volcanic nature of the land (Phlegra) and the pulsing by earthquakes land (Pallini), we would propose a Physiocratic-Cosmogonic interpretation of the legend of the Giants, earthly spirits and elementals responsible for extreme meteorologic phenomena, earthquakes, volcanic activity, storms, typhoons and all sort of upheaval. (That explains a lot of the names of the Giants - Enceladus, Erysichton, Chthonophylus, Pallantas etc.)
´´Theogony´´ tells us the story of the world´s and the gods creation and how everything started from Chaos. After Gaia (earth) was born. Gaia gave birth to Uranus (the sky) and from their
union the Titans, the Giants, the Cyclops and the Hecatonchires were born.