Chellah (Shalla) / Sala Colonia

Chellah (also spelled Shalla), historically associated with Sala Colonia, is described in the sources as a medieval fortified necropolis and archaeological site located on the south (left) side of the Bou Regreg estuary in the Rabat metropolitan area. The site is treated as a cultural asset and has been the object of scientific study; for example, a bryological survey conducted during prospections in autumn 2014, spring 2015 and winter 2016 identified 20 bryophyte species and highlighted biodeterioration concerns for the stone substrates. One source frames the site as "the Chellah archaeological site in Rabat, listed as a cultural asset since 2012 on UNESCO's World Heritage List" (quoted as given in that source). The supplied materials do not provide construction dates, detailed chronology, or ownership history. Reported phenomena and folkloric material are not present in the provided documents. No named spirits, apparitions, auditory phenomena, or eyewitness accounts appear in the cited sources. A musical track title and a general media item about African ruins reference the name "Chellah" in contexts that do not establish any supernatural claims or local legends in the provided excerpts. Conservation-focused scientific explanations (bryophyte-driven biodeterioration) are documented and concern the physical preservation of the monument rather than any paranormal interpretation.