Having made a reference in my last post to washed landscapes in the Stockholm Archipelago, here is some more info about the isostatic recovery of the inner parts of the Baltic -- around the Gulf of Bothnia. In the district known as Höga Kusten (with high cliffs and steep slopes adjacent to the sea -- very unusual for the Baltic.....) we find the highest recorded isostatically lifted shoreline in the world, at 285 m above sea-level. The beach features at this altitude, on Skuleberget, are not very spectacular, but the hill summits are capped with unwashed till (and woodland) whereas the lower slopes are washed. Hence the word "Kalottberg."
At the height of the last ice age, 20,000 years ago, the ice sheet, which covered all of Northern Europe, had its center in the sea near the Swedish High Coast (Höga Kusten). The ice's thickness attained 3 kilometres (1.9 mi), exerting significant pressure on the ground surface, which was thus situated 800 metres (2,600 ft) below the current level of the High Coast. When the ice melted, the land surface rose progressively, a phenomenon called the post-glacial rebound, at a speed of 8 mm (0.31 in) per year. The zone was only freed of ice 9,600 years ago. As the land emerged from Lake Ancylus (ancestor of the Baltic Sea), the waves affected the terrain of today's park. The coastline of that era can now be found at an altitude of 285 metres (935 ft), measured from Skuleberget, southwest of the national park, which constitutes an absolute record. The peaks of the park were islands at that time.
(The quote above is a bit misleading, since it seems to assume that isostatic rebound rates are more or less constant; however, there is abundant evidence that immediately following deglaciation there is a rapid "elastic rebound" in which the crust can rise at a rate of up to 10m per century. The rate then slows exponentially -- but the rate of land rise in the southern part of Hudson Bay in Canada is still more than 1m per century.)