Perun is the supreme thunder-god of the pre-Christian Slavs — the sky-father, the god of thunder, lightning, war, and the sacred oak [S1][S2][S4][S5]. He was the head of the Kiev pantheon: in the Primary Chronicle, the pagan ruler Vladimir of Kiev (980 CE) erected a great wooden idol of Perun on a hill (the 'Khorivets' hill) by the Dnieper, with a golden head and beard, and a row of other gods below [S1][S3]. The 'Tale of the Destruction of the Idols' (a later retelling) describes the idol being dragged into the river and destroyed in 980 [S3]. Perun's attributes: the hammer (the weapon that hurls thunder/lightning), the sacred oak (his tree), the sacred fire (he was 'the fire-god' in some accounts — the sacred flame that was not extinguished) [S4][S5][S6]. Perun is the great antagonist of Veles (the underworld god) in the reconstructed 'Perun-Veles' conflict [S6]. Perun's role is comparable to the Indo-European sky-father (Zeus, Thor, Dyaus Pitar) [S6].