Tikal is mentioned by the queen's priest, however, it wasn't discovered until the mid 19th century, and the name Tikal ("place of voices") was applied only in the early 20th century by archaeologists. This scene is a novel-within-the-film written by Izzi Creo, whose research may not be perfect. See more

Crazy Credits

The movie ends with a white out, which represents the Big Bang or creation of the Universe. Following that, the white areas behind the credits condense, which correlates with the condensation of matter and ultimate large scale structure of the universe. These devolve to a black screen, the early "opaque" stage of the universe, when early particles were forming. From this, stars begin to form, one by one until the credits end with a universe full of stars and the story of our universe to the present, told behind the credits. See more