Nosferatu Vampires
The Valley of Blood is located betten the mountains of Darkness. Upon the peak of the tallest mountain, the Mountain of Death, the Vampire Manor lays. Long ago, many millenia infact, Nosferatu, the oldest of all vampires often refered to as the Father of All Vampires, created this valley as a home for his children. He created it as a kingdom he could rule over and breed his minions until the time comes when his take-over of all realms will come to pass.
In the thousands of years since it's creation, the realm has served as home for many of the strongest vampires ever to be created or born. It has served as a stronghold for their kind and will likely continue to do so until the end of all time. Thus it has served it's purpose well.