Well, I was making notes, plotting, planning, scheming and dreaming - all of which is a vital part of the writing process for me. It actually takes up much more time than the mechanics of writing a first draft, which I can usually do relatively quickly (at 2,000 words a day).
In fact, I think it was in getting up onto that rock that I inadvertantly kicked off my shoe. (Remember that I only had a few seconds to get into this pose - I was alone, and had just balanced the camera on a nearby ledge and set it on the timer.)
Finally, here's the shoe making its break for freedom:
This is only a moment after it had gone in, so as you can see it's still pretty close to the shore.
It went a long way pretty quickly.
I'll end with a close-up: