CLUES
- This former Roman colony was founded in the first century, during the reign of the Emperor Nerva.
- The site has a large collection of mosaic pavings, illustrating myths and daily life.
- At 900 meters above sea level, the site is an example of Roman urban planning adapted for a mountain location.
- The well-preserved site includes an amphitheater that can accommodate 3,000 people.
ANSWER: The Roman ruins of Djémila near Setif, Algeria