There's some icebergs floating on your lake Peter...
Well its been a few years since there were last icebergs here. Where I am now was under several hundred metres of ice during the ice age. We know this because there are boulders that have been carried on the ice from near the Stelvio and deposited up near the 1,000 metre level(800 above the lake). Sure the mountains have probably been pushed up over thousands of years but it was still one hell of a lot of ice in this valley.