River dance.

Picture this: on the van radio, the andante movement from Mahler's 2nd symphony. The sky, deep peaches and purple in the twilight, the trees silhouetted black. The river is calm, reflecting the sky, and in this peach-and-purple mirror a family of beavers is cruising around their lodge, their snouts carving black vees in the surface. On top of the lodge sits the sentry, like the conductor of the beaver dance, their one last fling before they're cooped up in the stick and mud dome for the winter.