Cornelia Mertens

A person sits on a grassy slope watching the sun set over layered mountain silhouettes, a patch of snow below.

30.–31 May 2025

Oberbauenstock Grat

A demanding ridge loop up the Oberbauenstock above the Urnersee — airy limestone crests with a constant drop to the lake.

Details coming soon.

A smiling hiker in sunglasses on the summit, with distant snow-capped peaks under a deep blue sky.

A hiker striding down a wide snowfield high on the ridge, with mountains in the hazy distance.

A hiker in a pink beanie and patterned fleece sits on a grassy slope in the evening light, jagged snow-streaked peaks rising behind.

A hiker silhouetted against a bright sun setting behind layered mountain ridges.

A hiker in a purple backpack scrambles up a narrow rocky gully, hands and feet on the rock.

A sharply folded rock peak with dramatic layered strata rises against a clear blue sky.

Two small tents pitched among snow patches on the ridge, glowing orange at dusk with mountains fading into the distance.

A butterfly-shaped waffle, a well-earned summit snack.

Layered rock folds streaked with snow lead up to a rugged summit block.

A bird soars over snow-capped peaks under a deep blue sky.

A green valley opens onto a turquoise lake, with snow-capped peaks lining the horizon.

A hiker in a red beanie stands on a rocky outcrop at dusk, camera in hand, facing a horizon of snow-capped peaks.

A hiker with an orange backpack pauses on a grassy ridge, mountains rolling out behind her.

A hiker looks out over a lake framed by mountains from a high ridge, orange backpack and all.