Varus’s doomed expedition from the 1980s. Others carried standards and insignia Hazel didn’t recognize, as if they’d died at different times, on different quests—maybe not even from Camp Jupiter.
Most were armed with Imperial gold weapons—more Imperial gold than the entire Twelfth Legion possessed. Hazel could feel the combined power of al that gold humming around her, even scarier than the crackling of the glacier. She wondered if she could use her power to control the weapons, maybe disarm the ghosts, but she was afraid to try. Imperial gold wasn’t just a precious metal. It was deadly to demigods and monsters.
Trying to control that much at once would be like trying to control plutonium in a reactor. If she failed, she might wipe Hubbard Glacier off the map and kill her friends.

The Son of Neptune, Chapter XLIV