Were all the tombs in The Valley of the Kings underground?
No, not all of the tombs in the Valley of the kings were underground, most were, but not all the tombs. In fact there are 15 temples that were built in the honor of specific pharaohs. One of the most note able temples is the temple at Karnak. It is a huge temple carved into the mountain side and is called that because it was made at well, Karnak.