Skulls and bones at church in Wamba, Spain

This is the Associated Press caption that accompanies this remarkable photograph:

Skulls and bones are displayed inside the Santa Maria's church at the small village of Wamba, near Valladolid, Spain, Sunday, April 5, 2009. According to investigators, somewhere between the 15th and 17th centuries, the need for
room in the surrounding cemetery prompted the opening of the oldest tombs and
placing the bones in the ossuary. (AP Photo/Daniel Ochoa de Olza)