At the lake in the center of the Forest of Death, all members of the Anbu were summoned to witness a fight.
Tsunade vs Haruno Sakura.
The two walked on water to the center of the lake, clasped hands in a sign of respect, and then each retreated five meters, standing off against each other.
"When did this place get a lake?" Tsunade asked curiously, "It couldn't have been dug out just for this match, could it?"
"Of course not." Sakura shook her head, "I'm not that idle, though the water here was indeed temporarily poured in. After all, the pit created by my fight with that guy was a bit too deep. I filled it with water to make it a battleground, otherwise other ninjas wouldn't be able to see our fight."
"Big talk is easy."
Tsunade sneered incessantly.
This lake was four to five kilometers across. How much chakra would it take to create such a large pit?