A reconstructed map of what it looked like for approx. 125 million years ago when we were landlocked with Greenland and with parts of northern Canada. Approx. 40 million years ago, the land masses erupted, leading to the beginning of the Atlantic Ocean. Greenland and the continental shelf which Svalbard, the Barents Shelf and mainland Norway belong to started to drift apart, a process that continues to this day, with a drift of 2.5 cm a year. The dark blue colour is deep sea; light blue is shallow sea; yellow colour is coastline with beach or deltas, green colour are river plains, bogs or swamps and forest vegetation, and grey colour are land areas.