Exploring the Invisible Worlds of the Ancients,

A New Look at Very Old Things

Secret, Hidden Temple under Hathor's Temple

Giant Earth-Covered Persian/Mayan-Style Pyramid Buried in Russia.

Remnants of archaic global culture of domed architecture, & round- houses anciently called castros, astros,' because of their origins.

The above keyhole, also in video below, without vegetation
cover is also related to the one in Egypt and the one on Mars.

Below video shows keyhole on Mars, called Kofun,
as in coffin, similar to Kufu, as in Kufu's pyramid.

Peruvian Ruin in Ancient Basque/Etruscan Lands, Italy below.

Below is an archaic 'Basque/Celt/Arab' mastaba found on the eastern Delta of Egypt. Note the two room-like sections as found on other Basque mastabas similar to the one above. Their remnants are also found high in the Peruvian mountains. Some were toppled over by earthquakes and were once covered with roofing, and/or built atop mounds.