am_140722_54151.jpg
Twin Sisters range. This mountain range is a massive and rare occurence of Dunite rock (peridotite rock from the Earth's mantle) uplifted to the Earth's surface. Mount Baker Wilderness Washington USA
am_140722_54151.jpg
Twin Sisters range. This mountain range is a massive and rare occurence of Dunite rock (peridotite rock from the Earth's mantle) uplifted to the Earth's surface. Mount Baker Wilderness Washington USA