the New Hampshire mountain peak known for notorious weather extremes. The formation looks exactly like something you’d see ...

Starkly exposed mountain slopes. Billion-year-old rocks behind a lone iceberg. And the view from within a glacial tunnel. The main image shows ice that has formed around a waterfall near Giswil ...

While the rime ice made for fun pictures, the observatory doesn't want hikers attempting any copycat photoshoots. "Mountain weather is subject to rapid changes and extreme cold, so never dress ...

The staff at the Mount Washington Observatory posted on social media showed a rime ice-covered observatory tower illuminated by the rising sun with the mountain’s shadow and full moon in the ...