Archaeologist Sergio Gomez displays a jaguar skull found inside a 2,000-year-old tunnel built under the ornate Feathered Serpent Pyramid, which Gomez believes recreated the underworld and was used to initiate new rulers among other religious rituals, in the ruins of Teotihuacan, in San Juan Teotihuacan, Mexico August 12, 2021. Picture taken August 12, 2021. REUTERS/Toya Sarno Jordan