The Lutheran Gustav Adolf Stave Church is a stave church situated in Hahnenklee, a borough of Goslar in the Harz mountains, Germany. Construction of the church began in 1907 and it was consecrated on 28 June 1908. The church is a copy of the medieval Borgund Stave Church in Norway.br The Oker Dam (German: Okertalsperre) is a dam in the Harz mountains in Lower Saxony, Germany. It is fed by the River Oker.