Rick Riordan. The Heroes Of Olympus. The House Of Hades (№ 275510)

- Fleheton?
He quite cheerfully continued down the slope. They had scarcely covered a third of the way through and was still quite high, any failure could result in death.
Looks like a competition for spitting paper balls.
- Please don't make me laugh, - she said.
- Just trying to lighten the mood.
"Thank you," muttered Annabeth, when her broken leg almost fell off the ledge. - Falling to your death, I'll keep a smile on your face.