Falling Water Gorge was actually located near Kirigakure.
If the Konoha ninja forces led by Uchiha Yue had not already advanced into the gateway region of Kirigakure, the Fourth Mizukage, Yagura—or Uchiha Madara, who controlled him—would never have arranged to fight Uchiha Yue near Falling Water Gorge. After all, if Uchiha Yue, heading there for the battle, had harbored other intentions, he could have launched an attack directly into Kirigakure's territory. That would have put Kirigakure, already at war with Konoha, in serious trouble.
However, since Yagura under Uchiha Madara's control was so confident, Uchiha Yue could not casually attempt a surprise attack on Kirigakure either. After all, if Uchiha Yue did not head directly to Falling Water Gorge for the battle and instead went to wreak havoc in Kirigakure, he might walk straight into Uchiha Madara's trap and be dragged into a bitter fight within the village. He might even die in Kirigakure under Uchiha Madara's scheme.
Thus, after leaving the Konoha camp, Uchiha Yue did not hesitate in the slightest. He headed straight for the vicinity of Falling Water Gorge, ready to face the challenge from the Fourth Mizukage, Yagura, under Uchiha Madara's control. Yet when Uchiha Yue arrived at Falling Water Gorge, he was somewhat surprised as well.
Because almost the moment Uchiha Yue arrived at Falling Water Gorge, he sensed a powerful fluctuation of chakra appearing around him. Then, when he used his Purple Eye to observe his surroundings, the youthful face of the Fourth Mizukage, Yagura, indeed appeared before him.
Immediately afterward, Uchiha Yue used Falling Moon Style: Flash Step, appearing directly before the Fourth Mizukage, Yagura.
At that moment, Uchiha Yue and the Fourth Mizukage, Yagura, stood atop the two cliffs of Falling Water Gorge. Between them lay a bottomless chasm. It was said