Proto-Indo-European mythology realm of Midgard. Other dragon-slaying myths are also found in the Germanic tradition. In the "Völsunga saga", Sigurd slays the dragon Fafnir and, in "Beowulf", the eponymous hero slays a different dragon. Reflexes of the Proto-Indo-European dragon-slaying myth are found throughout other branches of the language family as well. In Zoroastrianism and Persian mythology, Fereydun, and later Garshasp, slays Zahhak. In Slavic mythology, Perun, the god of storms, slays Veles and Dobrynya Nikitich slays the three-headed dragon Zmey. In Armenian mythology, the god Vahagn slays the dragon Vishap. In Romanian folklore, Făt-Frumos slays the fire-spitting monster Zmeu. In Celtic mythology,
Sacred trees and groves in Germanic paganism and mythology groves and individual trees. After Christianization, trees continue to play a significant role in the folk beliefs of the Germanic peoples. The pagan Germanic peoples referred to holy places by a variety of terms and many of these terms variously referred to stones, groves, and temple structures. From Proto-Germanic or , a masculine noun, developed Old Norse meaning 'temple, idol', Old English 'temple, idol', and Old High German meaning 'holy grove, holy stone'. According to philologist Vladimir Orel, the term was borrowed from the continental Celtic * or, alternately, the same non-Indo-European source as the Celtic source. A more general