Off we went for 8 hours of non-stop adventure mountain biking. We left Silvaplana and rode through the gorgeous forest of golden larches and reddening myrtilles bushes up to the Bernina Pass where the cloud cover got so thick we didn't even realize that there was a lake next to us.
Thanks to the map and the dam we knew it was there! We rode over the dam instead of riding down to Poschiavio in the white-out. The descent into Pontresina was beautiful with views onto the Morterasch glacier in the sun. 
The people around here are not kidding with their paths, I have never seen or imagined anything quite like this. They are definitely made by the Swiss - they have removed every rock and root possible! I still managed to fall over though... Then we rode by the lake in St. Moritz in the freezing winds that make it so popular for kite surfing in the summer. We quickly got away from the lake and rode in the forest above - adding a few more huffing & puffing episodes to an already long day. Epic!