As the sun moved higher in the sky the clouds began to break up. I decided to hike up-stream a bit further to see what I might discover when I came upon an area where there were many rocks that lead out into the river. The tide was still low so I was able to work my way out onto the rocks to get a different perspective of the Potomac. The sky was changing rapidly causing the trees in the distance to go in and out of shadow--very cool to watch but difficult to paint. As I was painting the rocks in the foreground, I realized that some of the rocks were gone--the tide was coming in. I painted a bit longer hoping to get a bit more done but decided to pack it in and get back to shore before my path was completely underwater. My under painting is visible in the lower corners of the piece--I rather like it with the corners unpainted.