"At Aswan, in the Nile River there are several islands but Elephantine Island and Kitchener Island are the largest. Elephantine Island was originally called Yebu, which is the ancient Egyptian word for elephant. The Greeks called the island Elephantine because of the ivory trade that was done on the island".
"But, all you have to do is to look and see what the rock formations look like, and you can easily see why it was called Elephantine Island".