Tomasee, at 2344 metres above sea level, is surrounded by a natural basin feeding water into the lake. This area is now under conservation. Leaving the Oberalp pass on foot, the lake is reached in one and a half hours. During the season a patchwork of alpine flora spreads around in vivid colours. And, of course, the water is so pure that it is even drinkable!

Here high on the Oberalp pass begins the Rhine bike route, which follows the river all the way to Basel and even to the shores of the North sea. Not far from Tomasee lie two SAC mountain lodges, providing accommodation - a great starting point for the bike tour.