The landforms of Svalbard were created through repeated ice ages, when glaciers cut the former plateau into fjords, valleys, and mountains. The tallest peak is Newtontoppen (), followed by Perriertoppen (), Ceresfjellet (), Chadwickryggen (), and Galileotoppen (). The longest fjord is Wijdefjorden (), followed by Isfjorden (), Van Mijenfjorden (), Woodfjorden (), and Wahlenbergfjorden (). Svalbard is part of the High Arctic Large Igneous Province, and experienced Norway's strongest earthquake on 6 March 2009, which hit a magnitude of 6.5.