These glyphs were carved into the ceiling beams of a 3000 year old temple is located at Abydos, hundreds of miles south the Giza Plateau.
These glyphs depict flying machines that are very modern in appearance and obviously not products of primitive Egyptian technology.

You be the judge of what they are.

The Nazca Legend

The Nazca Desert is a high plateau about sixty miles long and five miles wide on the coast of Peru, some 250 miles south of Lima.  On the Nazca plateau there is a collection geoglyphs, drawings on plateau basin and surrounding mountains, that can only be defined from a high altitude, and cannot be distinguished from the ground.  These lines are laid out across the
plateau for more than 800 miles. Some of the lines extend for 12 miles. There are many lines, objects, and several kinds of figures, such as fish, birds, monkeys, a whale, spiders and
plants. Since these lines are on a flat surface and its climate is extremely dry, nearly
all geoglyphs remain completely intact