The first records of Sangheili knowledge of the Borogove stretch back to the Garthakra ruins, where archaeologists uncover tablets enscribed with images bearing a remarkable similarity to the creature. This is not an isolated case - the Borogove has been used a symbol for many things throughout the history of Sangheili occupation of Ketesh, from Garthakra, to Joranar, to Keltash, to modern Kaaran - eternity, rebirth, sacrifice, and so on, and is a prominent symbol on Keltashan mythology until the Second Exodus. The species had long ago become extinct on the northern continent, and lived on in Kaaranese mythology only as a remembrance of earlier traditions, and was all but forgotten when it was rediscovered.