San Lorenzo Colossal Head 8 ( also known as San Lorenzo Monument 61 ) stands 2 @.@ 2 metres ( 7 @.@ 2 ft ) high ; it measures 1 @.@ 65 metres ( 5 @.@ 4 ft ) wide by 1 @.@ 6 metres ( 5 @.@ 2 ft ) deep and weighs 13 tons . It is one of the finest examples of an Olmec colossal head . It was found lying on its side to the south of a monumental throne . The monument was discovered at a depth of 5 metres ( 16 ft ) during a magnetometer survey of the site in 1968 ; it has been dated to the Early Preclassic . After discovery it was initially reburied ; it was moved to the Museo de Antropología de Xalapa in 1986 . The headdress is decorated with the talons or claws of either a jaguar or an eagle . It has a headband and a cover that descends from under the headdress proper behind the ears . Two short straps descend in front of the ears . The head sports large ear ornaments in the form of pegs . The face is that of a mature male with sagging cheeks and wrinkles between these and the nose . The forehead is gathered in a frown . The mouth is slightly parted to reveal the teeth . Most of the head is carved in a realistic manner , the exception being the ears . These are stylised and represented by one question mark shape contained within another . The head is very well preserved and displays a fine finish .