From Sea to Sea: An Exploration of Canada by Bicycle
When you see something like this coming towards you with flashes of lightning slamming earthward and enormous peals of thunder you can't help but feel a little fear. That if you are caught out in the open you are dead meat. I love the way the sun slants through half of the cloud while the other half is pitch black. If you have not noticed it, to give you a little sense of the scale involved, there is a pair of headlights from an oncoming car in the bottom left hand corner.