The hieroglyphs, painted in black and red, along with a colorful mural of a king and his mysterious attendants, seem to have been a sort of handy reference chart ... "The Mayan calendar is going ...

Ancient inscriptions on the walls of a looted house in the Guatemalan jungle are the oldest astronomical charts ... Mayan ceremonial calendar and cycles of the sun, Mars and Venus. The hieroglyphs ...

The hieroglyphs, painted in black and red, along with a colorful mural of a king and his mysterious attendants, seem to have been a sort of handy reference chart ... "The Mayan calendar is going ...

Hieroglyphics discovered in an ancient Mayan temple in Guatemala date to the third century BC, showing Mayan writing developed much earlier than believed, according to research. The hieroglyphics ...