Thutmose I was buried in a tomb now called KV20 dug high into the cliffs of the Valley of the Kings. His daughter Hatshepsut had the tomb made bigger, with a room big enough for both of their stone coffins (sarcophagus). His grandson, Thutmose III had him reburied in KV38. KV20 was rediscovered during the Napoleonic expedition of 1799. In 1844, the Prussian scholar Karl Richard Lepsius had explored its upper passage. However, many passageways were blocked by rocks, stones and other rubbish brought in during floods. In 1903-1904 Howard Carter, after two years of hard work, was able to clear the passages and enter the double burial chamber. He found broken pottery and shattered stone vessels from the burial chamber and lower passages. He found parts of two vases made for Queen Ahmose Nefertari, which were part of the original funerary equipment of Thutmose I. On one vase was written that Thutmose II "[made it] as his monument to his father." Other vessels which had the names and titles of Thutmose I had also been inscribed by his son and successor, Thutmose II. There were parts of stone vessels made for Hatshepsut before she herself became king which had her royal name of 'Maatkare'.