The Waters Edge exhibit at the Audubon Center Riverlands continues through the month of December. Here is the Confluence Cairn after dark November 10. Lighting by Rick Vaughn. Due to the fragility of the glass, the cairn has been moved inside the Center where you can see it near Joshua Rowan’s three Confluence Cairn Images. Josh will be speaking in the gallery there on Saturday, December 22 at 11 am.