Thoth the moon and Anubis.
Working from the assumption that FD actually tried to throw us a bone with the guinea pig hint, I've taken a look at Thoth.
Thoth is an Egyptian god of Knowledge, the Moon, Measurement, Wisdom, the Alphabet, Records, Thought, Intelligence, Meditation, the Mind, Logic, Reason, Reading, Hieroglyphics, Magic, Secrets, Scribes, and Writing. Often depicted as a man with a bird head and a hat formed as a waning/waxing moon.
Thoth is also a Tarot deck, by Alister Crowley(he apparently went nuts after visiting Egypt and linked everything to their old religion).
The book of Thoth is a guide book for this tarot deck. Example here is the Moon Card:
http://www.bibliotecapleyades.net/crowley/libro_thoth05.htm#XVIII. THE MOON
I tried to make a small interpretation my self, in the context of the ancient ruins.
In essence, I'm suggesting two possibilities.
1. The Guardians visited Earth in the very distant past (several thousand years BC) and have survived i Ancient myths as Egyptian gods?
2. The ridge and the Large landing pad will at the correct time in a cycle (6.9 days), point(bearing ~65°) to the home system of the Guardians?