Middle-earth is the setting of much of the English writer J. R. R. Tolkien's fantasy. The term is equivalent to the Miðgarðr of Norse mythology and Middangeard in Old English works, including Beowulf. From Wikipedia
Filming has commenced at Shepperton Studios under showrunners J.D. Payne and Patrick McKay, kick-starting a time-leaping third season that intensifies Sauron’s rise.