One of the old forts we visited had some wonderful tunnels to explore. Some were tunnels into the underground portions of the fort, and were filled with darkness and dripping water. Others, such as this one, were wholly above ground and served as access points between the fort and the shore.
This tunnel was open to the sky above at the mid point, creating some wonderful light and shadow patterns. I was setting up an image when this couple took a stroll through hand-in-hand. Sometimes the image sets itself up.