Yep, you read that correctly – Llama poop. New World peoples did not domesticate large beasts of burden with one exception – the Llama in South America. The Inca used Llamas as pack animals, as a source of hair for knitting & weaving, nutrients, companionship, and even their dung was instrumental. Like most civilizations, the dung of large animals was used for fertilization and burned as a fuel source.
The maritime accomplishments of the Maya have largely been neglected in the archaeological world. Recently, NOAA teamed up with Mayan Archaeologists to explore ancient coastlines and maritime accomplishments of this vibrant, New World civilization.
Read more about this large, significant project in this article published by NOAA.