Why was king Tutankhamen's tomb undiscovered for 33 years?

Answer 1

it is because when Horemheb became pharaoh,he went about destroying every monument built to honor King Tut which accidentally covered the entrance to King Tut's tomb.
King Tutankhamen's tomb was undiscovered for 33 centuries because when Horemheb became pharaoh, he went about destroying every monument ever built in Tutankhamen's honor. But the stonecutters accidentally covered the entrance.

Answer 2

because when works where trying to clean and they accidentally covered the entrance

Answer 3

because it was hidden under other kings tombs

Answer 4

Tutankhamun's tomb was hard to find because it was hidden amongst other tombstones.