Over the east horizon at sunset and the west horizon at dawn, interesting shadows can be observed. The best known is the Earth-shadow. It begins to rise almost at the same moment as the Sun begins to set or rise, respectively. It is a very striking bluish-grey segment, shifting gradually across the purple layer, and as a rule it cannot be followed further than about 6° above the horizon (M. Minnaret, 1954). Just few minutes before the shadow of our planet starts to rise, shadows from mountains can be spotted. The above image shows the shadow projected by the summit of Caldera de Taburiente  – La Palma, Canary Islands – over the Atlantic ocean.

• Item #022016 – full range of photographic print sizes are available – order now
• For using this image in media, websites, or publications please contact me