The final resting place of Albus Dumbledore (HBP30) and the Elder Wand (DH36). Located near the Lake on the Hogwarts grounds, it is a tomb of white marble that magically encapsulated Dumbledore’s corpse at his funeral (HBP30).
Harry later chooses to mark Dobby's grave on the shore of a body of water with a white stone (DH24). -BB
A white tomb is fitting since "Albus" is Latin for "white". -BB