Idaho Exposure

By 10:47, the eclipse had already begun. I tried to imagine what a shadow would like traveling from the west at 1600 mph. How could I capture that? Hopefully I would see a swath of darkness, with areas of daylight at the extreme edges of the field of view of my widest lens. Would there be enough light to handhold, or should I set the camera on a rock and guess a time exposure? I didn't think too long about this. I was enjoying the conversation I was having with these two about about extreme skiing.