Fields of Punishment

The Fields of Punishment is a place in the Underworld.

The Lightning Thief
In The Lightning Thief, Percy sees the Fields of Punishment while he is in the Underworld. Later when his quest is over, he wonders whether he has the right to send Gabe there.

The Sea of Monsters
The Fields of Punishment do not appear in The Sea of Monsters, but Tantalus is brought to Camp Half-Blood from there. Tantalus was cursed by standing in a pond and a fruit tree hanging over him but he could never eat or drink

The Demigod Files
In Percy Jackson and the Sword of Hades, Percy, Thalia and Nico travel to the Fields of Punishment to question Sisyphus.

Appearance
A rocky path leads to it. It glows and smokes. It has cracked wasteland, rivers of lava, and minefields and barbed wire separating the different torture areas.