I put six pine cone floats in the stream and tethered them with lines of twine to a log that had fallen across the stream; the pine cones became a weather vein in water, like a fish on a line in the current. When I moved this "force indicator" from its languid bobbing on the side of the stream to the middle of the stream, I could feel and see the strength of the current in the taut twine holding the furiously bobbing pine cones. Before we left, I took the pine cones to use in some way at each campsite of this mission to re-imagine the ice age flow. |