Just as there is a natural wonder below sea level there is also one above it, in the sky. The Northern lights, more scientifically called the Aurora Borealis, is a natural phenomenon which marks the seventh natural wonder of the world. The Aurora appears as a light show of beautiful dancing colours - usually greens blue and purples - when electrically charged particles caused by sun flares or extreme sun activity reach the gaseous particles found in the Earth’s atmosphere. The result is a moving and awe-striking rainbow of moving color that has to be seen to be truly taken in. This is a natural wonder as it is a striking example of how a naturally occurring phenomenon - such as a sun flare - can result in a beautiful event on Earth.
Generally the northern lights can be seen more clearly and frequently closer to the Arctic Circle. Polar regions have some of the most phenomenal displays, especially as light pollution from cities is virtually nonexistent there. However, the aurora can be seen in several countries including the US state of Alaska, large sections of northern Canada, as well as Iceland, Greenland, Norway, Sweden and Finland.