The Son of Neptune The Son of Neptune The Son of Neptune is a 2011 fantasy-adventure novel written by American author Rick Riordan, based on Greek and Roman mythology. It is the second book in "The Heroes of Olympus" series, preceded by "The Lost Hero" and followed by "The Mark of Athena". The story follows the adventures of amnesiac Percy Jackson, a demigod son of Poseidon, as he meets a camp of Roman demigods and goes to Alaska with his new friends Hazel Levesque and Frank Zhang to free the Greek god of death, Thanatos and help save the world from Gaea, the earth
Neptune (mythology) (presently Nepi), town of the "ager Faliscus" near Falerii. The district was traditionally connected to the cult of the god: Messapus and Halesus, the eponymous hero of Falerii, were believed to be his own sons. Messapus led the Falisci and others to war in the Aeneid. Nepi and Falerii have been famed since antiquity for the excellent quality of the water of their springs, scattered in meadows. Nepet is considered a hydronymic toponym of pre-Indo-European origin widespread in Europe and from an appellative meaning "damp wide valley, plain", cognate with pre-Greek "νάπη", "wooded valley". The theology of Neptune may only