Pictures from the peak of perfection: The man who climbs mountains in search of the ultimate photo.

Clinging on: Climber Pesche Wuthrich swings for another handhold
in the Alps on the border between Italy and Switzerland

Perilous: This image shows Swiss mountaineer Ueli Steck
ice-climbing near Pontresina, Switzerland

Balancing act: Two climbers perch on top of Salbitnadel in Uri,
Switzerland, in another of Mr Bosch's stunning images

Perspective: Mr Bosch has spent nearly 40 years climbing the
Earth's highest peaks to get his images

Give me a leg up: Climbers half way up the artificial wall on
the Diga di Luzzone in Tessin

Staying cool: Ueli Steck ice axes in hand as he climbs near
Oeschinen in Bern, Switzerland

Eyes on the prize: Mr Bosch stands suspended at a 90 degree
angle on the artificial wall in Tessin, Switzerland

Bleak: The photographer counts Cerro Torre, in Patagonia,
Argentina, as one of the toughest to climb

Scaling new heights: This image shows ice-climbing on the
Godwin Austen Glacier in Pakistan with K2 in the background

Don't look down: Annatina Schultz makes her way up
The Fall on Klettern in Meringen, Switzerland

Nearly there: This close up was taken near the summit
of the wall as Mr Bosch was suspended over the drop
Clinging on: Climber Pesche Wuthrich swings for another handhold
in the Alps on the border between Italy and Switzerland
Perilous: This image shows Swiss mountaineer Ueli Steck
ice-climbing near Pontresina, Switzerland
Balancing act: Two climbers perch on top of Salbitnadel in Uri,
Switzerland, in another of Mr Bosch's stunning images
Perspective: Mr Bosch has spent nearly 40 years climbing the
Earth's highest peaks to get his images
Give me a leg up: Climbers half way up the artificial wall on
the Diga di Luzzone in Tessin
Staying cool: Ueli Steck ice axes in hand as he climbs near
Oeschinen in Bern, Switzerland
Eyes on the prize: Mr Bosch stands suspended at a 90 degree
angle on the artificial wall in Tessin, Switzerland
Bleak: The photographer counts Cerro Torre, in Patagonia,
Argentina, as one of the toughest to climb
Scaling new heights: This image shows ice-climbing on the
Godwin Austen Glacier in Pakistan with K2 in the background
Don't look down: Annatina Schultz makes her way up
The Fall on Klettern in Meringen, Switzerland
Nearly there: This close up was taken near the summit
of the wall as Mr Bosch was suspended over the drop