htes of olympus

The Heroes of Olympus is a pentalogy of fantasy - adventure novels written by American author Rick Riordan. god of war nordik The novels detail a conflict between Greek demigods, Roman demigods, and Gaea. god of war nordik In the fourth book of the series, there is also a fight against Tartarus, which, in Greek mythology, was the darkest and deepest point of the Underworld