Olmec
From Memory Alpha, the free Star Trek reference.
The Olmecs were a mysterious ancient civilization on Earth. One of the Olmecs' most famous impacts were their artistic figurines. On Earth, they deposited giant heads throughout Mesoamerica.
In 2375, Kurros requested Lt. Commander Chakotay's Olmec figurine as payment to rescue the USS Voyager from the Hazari. (VOY: "Think Tank")
