I don't know how many other knitter-climbers there are in the world ... but this pattern's for you! It's a densely cabled chalk bag, inspired by the sinuously layered sandstone spires of Sedona.
It has a rigid rim, constructed by sewing in a circle of tubing underneath a turned hem.
And a fleece lining, which closes snugly with a hidden internal drawstring. You can see it pinned in here, in preparation for the hand-sewing (basic, I promise!). Makes it a great bag for carrying anything small and precious.
The hemp-blend yarn is pretty tough-wearing, especially when knit up at such a tight and sturdy gauge, though I still probably wouldn't take it into any crazy off-width granite action! :)
The pattern has both charted and written knitting directions, with a detailed tutorial (lots of photos!) to walk you through the sewing and construction.
For more details or to buy the pattern, check out its Ravelry page: http://www.ravelry.com/patterns/library/cliff-dweller-chalk-bag