chip at reliefs portray two vehement - faced ruler from the Olmec refinement have been obtain by a team of archaeologists from Mexico’sNational Institute of Anthropology and History(INAH ) . They believe that the part ’ pained expressions show a pair of leaders in a enchantment - like state , roaring like a jaguar , in the midst of a “ contortionist ” rite designed to induce black - outs .

Discovered near the city of Villahermosa in Tabasco , the pair of alleviation are fashioned out of limestone and have a diam of approximately 1.4 beat ( 4.5 foot ) . Although the relief also have engraved footprints , corncob , and cross , their most big features are the depictions of human faces .

The INAH says the faces map local rulers of the Middle Usumacinta region from the later Olmec civilization ( 900 - 400 BCE ) , the first major civilisation in Mexico that flourish before the Maya . With arms tightly crossed around them , their sheer face are wide open with a “ grumpy mouth , ” which touch to the roar of the Panthera onca .

A rather judgy looking face carved into a huge round stone

The grumpy-looking reliefs date to the late Olmec horizon (900-400 BCE). Image courtesy of INAH Tobaco Center

The Panthera onca is an extremely common figure in many pre - Columbian Mesoamerican cultures , with much all feeling organisation from this clock time featuring a jaguar god . There ’s evensome archaeologic evidencethat the Maya kept Panthera onca as pets . As the heavy big cat in Central and South America , not to cite theirmajestic beaut , it ’s not hard to see why this animal gained so much esteem and respect .

Other similar monument from the Middle Usumacinta region indicate that the stand-in are depicting the leaders during a “ contortionist ” ritual , in which they were efficaciously strangled into an otherwordly spell .

“ By dramatise the position in which they appear depict – which reduce the current of aerate blood to the brain – the characters reached trance commonwealth in divinatory ceremonies , and that confabulate world power on them , ” Tomás Pérez Suárez , an archeologist at the INAH , explain in astatement .

This style of relief is distinctive of the late Olmec civilisation prior to the procedure of " Mayanization " that struck the cultivation around 500 to 300 BCE .

It does appear , however , that the legacy of the Olmec civilization lived on . Archaeologists from the INAH speculate that the trend seen in this duo of reliefs perhaps evolved into the definitive Maya “ ajaw ” inscriptions , which depict leader with a similarly gawp oral fissure .

“ The word ajaw think of ' he who cry ' , ' he who commands ' , ' he who arrange ' ; and in these Mayan monuments the mouth bear out , a feature that must come from Olmec times , particularly from these circular reliefs of ' contortionist ' that are portraits of local chiefs , ” added Pérez Suárez .