The Battle of the Labyrinth camp for the school year. On his fifteenth birthday at the summer's end, Percy receives a visit from his father Poseidon, who gives him a sand dollar, admonishing him to “spend it wisely”. Nico later appears to tell Percy his plan to defeat Luke once and for all. "The Battle of the Labyrinth" was initially referred to as "Percy 4" until the title was officially revealed. The novel was teased by Rick Riordan behind the pages of its predecessor, "The Titan's Curse". It was based on the Greek myth of the labyrinth, where the Minotaur was supposedly kept. In his
Daedalus from the Acropolis. Athena turned Perdix into a partridge and left a scar that looked like a partridge on Daedalus' right shoulder and Daedalus left Athens due to this. Such anecdotal details as these were embroideries upon the reputation of Daedalus as an innovator in many arts. In Pliny's Natural History (7.198) he is credited with inventing carpentry "and with it the saw, axe, plumb-line, drill, glue, and isinglass". Pausanias, in travelling around Greece, attributed to Daedalus numerous archaic wooden cult figures (see "xoana") that impressed him: "All the works of this artist, though somewhat uncouth to look at, nevertheless