(at around 1h 10 mins) The film includes a glimpse of a map showing Atlantis off the coast of Spain. It's a reference to Plato's theory that the construction techniques used in Egypt were imported from the ancient lost civilization of Atlantis.
This film features some alleged historical controversies, including construction of the great pyramids 12,000 years ago (almost 7,500 years earlier), the existence of the Ben-Ben stone (the pyramidion stone missing from the top of the Khafre pyramid), the correlation between the position of the pyramids and the stars from the Orion constellation (associated by the Egyptians with the god Osiris), the Sphinx with a head of a lion allegedly correlated with the Leo constellation rising to the east (at the same time that Orion is in conjunction with the Giza pyramid complex), and the possible nonhuman origins of the first kings of Egypt.
D'Leh refers to one star as "the one that never moves." That would be the North Star, which appears stationary in the northern night sky. In 10,000 BC the North Star was Vega, the fifth brightest star in the sky. It would've been very obvious in the dark sky.
(at around 40 mins) The computer-generated wet saber-tooth tiger was created by Double Negative. Creating it required combining several of the most challenging elements of visual effects: fur, wet fur, water, and creature animation.