11 climbers appeared to have died on the world's second highest mountain K2.

It was one of the deadliest days in mountaineering history.

Rock falls, avalanches.

Huge pieces of ice.

All are big enough to kill you.

He just flew out into Devoid, and he was gone.

How did it all go so wrong?

And is it really worth risking death to feel alive? Why would

somebody pay to go to a place called the death zone on vacation? Extreme, peak danger. With me,

Natalia Melman Petrazella. Listen to the full series now, first on BBC Sounds. This is a BBC Radio

for download.

You're listening to me.

Claire Balding with another edition of ramblings.

Silence doesn't come naturally to me.

It has to be said.

Which isn't a bad thing because obviously this is a radio program. And in this series of ramblings, we are exploring self-improvement, walking to make ourselves

better. And today I have come to find Dr Kate Kirkwood in Wales, right on the border.

We're just north-west of Hey On Why.

What would you say is the key to walking for you, Kate?

Is it about the view, the geography, the experience, or is it about what's going on inside your head?

I think it's probably a combination of all of those things, but it's certainly, above all, a chance to have a bit of rest

from the kind of frenzied nature of the rest of my week, and have some time alone to try and

...