Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Snow shoe walking in the Bayerischer Wald, Germany.

Bernese Alps, Switzerland. European Alps.

Bernese Alps, Switzerland. European Alps.

Bernese Alps, Switzerland. European Alps.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

During an ascent of the Vulcan San Jose, Cordillera Central, Chili.

Bernese Alps, Switzerland. European Alps.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

The Swiss Rheinwaldhorn, seen from the Zapport-Hutte (mountain cabin). Kanton Graubunden. Switzerland.

Climbing an unclimbed summit in the Bhutanese Himalaya, Bhutan, Asia.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Hans van der Meulen and Thierry Schmitter on their summit ascent of the K2, July 1995.

Thierry Schmitter, climbing on the K2, Pakistan. July 1995.

The Dutch K2-team that ascended the mountain succesfully in 1995: Cas van de Gevel. Joost Cohensius, Wilco van Rooijen, Thierry Schmitter, Wouter Beelen (hardly visible), Hans van der Meulen. Ronald Hulsebosch. Arjan van Waardenburg, Edmond Ofner en Ronald Naar (expeditionleader).

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

Bernese Alps, Switzerland. European Alps.

Climbing in the Mont Blanc-area on some of the peaks near the Aiguille du Midi. France.

The Swiss Rheinwaldhorn, seen from the Zapport-Hutte (mountain cabin). Kanton Graubunden. Switzerland.

The Swiss Rheinwaldhorn, seen from the Zapport-Hutte (mountain cabin). Kanton Graubunden. Switzerland.

Ronald Naar in Patagonia, in 2003, after a crossing of the Norther Patagonian Ice Shield, Chile.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Skating at the Kager Plassen, Zuid-Holland. The Netherlands.

Bicycling on the ice of the Kager Plassen, Zuid-Holland. Nederland.

Family playing on the ice, Kager Plassen. Nederland

Ice skating on the Kager Plassen, Zuid-Holland. Nederland.

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating the Alblasserwaard Molentocht, Zuid-Holland. The Netherlands

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Kortenhoefse Plassen, Noord-Holland, The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Wind mill at the Rottemeren, in winter, Zuid-Holland. Nederland

Seniors walking near the Rottemeren, Zuid-Holland. Nederland

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.

Skating at the Rottemeren, a small lake in between Zoetermeer en Rotterdam. Province of Zuid-Holland. The Netherlands.