Tunisia's Extraordinary 1,400-Year-Old Baptistery

In 1993, a quarry in Tunisia accidentally uncovered something that had been buried for 1,400 years. The Baptistery of Bekalta is a 6th to 7th century Christian baptismal basin decorated with mosaic tesserae, noted for its extraordinary state of preservation. The tesserae, roughly one centimeter in size, are composed of limestone in multiple colors, terracotta, marble, and glass. Every single piece still intact. Every symbol still readable. Buried under 20 centimeters of soil for over a millennium.