Okay so, here is a short archeological history of Gotland. Way back in the Silurian period, which by my reckoning is about 400 million year ago, this area was a tropical coral reef, but without Surfers Paradise near by. Then along came a big winter chill called the ice age which depressed whatever land there was and so, just over 10,000 years ago, Gotland didn’t exist – in that it was under water. As the ice melted, the land rose up, in fact it still is at the rate of 1 metre per century, although it’s slowing down.
Anyway, Gotland appeared rising like Venus from the sea. The sea wasn’t too happy at that and eroded a fair bit of land but left sea stacks along the coast and in land.
Remember this castle in Åland?
Well it used to an island surround by water in the 15th century. Not now as the land keeps rising.
Now back to the walled city.
