Switzerland. Canton Graubünden. Davos. Twelve x Guinness World Record breaker, Samsam Bubbleman and his highly skilled team of Bubbleologists perform their unique brand of 'Bubbleology' on Lake Davos. Soap bubbles fly in mid-air in sunny day against blue sky with white clouds. Lake Davos (German: Davosersee) is a small natural lake. Its surface area is 0.59 km² and the maximum depth is 54 m. Fed by sources of the Rhine, Flüelabach and Totalpbach, among other mountain creeks, the lake is used as a hydropower reservoir. 11.07.2020 © 2020 Didier Ruef