Karnak's central temple built entirely of massive megalithic granite blocks

The central temple at Karnak features massive granite columns and blocks, including the famous hypostyle hall constructed under Amenhotep III and continued by Seti I and Ramses II. The temple complex employed sandstone, limestone, and granite materials, with granite notably used for major architectural elements like columns and doorways. Some granite door sockets and pivot holes exist, though claims about surviving original hinges and locking mechanisms lack verification. The precision of certain cut stone elements, including pivot holes for doors, demonstrates skilled ancient Egyptian engineering.