Chellah or Sala Colonia (شالة), is a former city south of Rabat that was destroyed by an earthquake in the 18th-century and became depopulated as a result. Chellah existed since pre-Islamic times and houses complex of ancient Roman Mauretania Tingitana and medieval ruins. First spot of Salé, this latter was completed towards the north of the ... Found on http://en.wikipedia.org/wiki/Chellah