One of the hundreds of elongated skulls that were discovered in 1928 at Paracas Peninsula in Peru. Cranial deformation was practiced by the Paracas civilization (800-100 BCE) by tightly wrapping the head in cloth, during the first few years of life, in order to elongate the cranium
There's a fringe "researcher" (lost ancient civilizations type) called Brien Forester that claims some of these are natural based on their foramen magnum (big hole where spinal cord goes) sitting in a different place. He says you can't influence that through artificial means.