Zabuza and Haku's Grave

The Zabuza and Haku's Grave is the place that Zabuza Momochi and Haku were burried. It's placed near the Great Naruto Bridge in the Land of Waves. Later in Part II, Suigetsu goes there to retrieve Zabuza's Decapitating Carving Knife

In memory of Haku, his belt was put there, and in memory of Zabuza his sword was put there too.