Archaeological interest of Pedra da Gávea
Pedra da Gávea is a mountain in Tijuca Forest, Rio de Janeiro, Brazil. Differential weathering on one side of the rock has created what is described as a stylized human face, and weathered markings on another face of the rock have been described as an inscription.
Source: Wikipedia — Archaeological interest of Pedra da Gávea (CC BY-SA 4.0)