On the south slope of the latter are remains of a small temple or sacellum described by St Jerome.

Ad hoc sacellum Ara Cœli a festo nativitatis domini usque ad festum Epiphani� magna populi frequentia invisitur et colitur in presepio Christi nati infantuli simulacrum ex ole� ligno apud montem olivarum Hierosolymis a quodam devoto Minorita sculptum eo animo, ut ad hoc festum celebrandum deportaretur.

Sacellum, sā-sel′um, n. a little sanctuary, a small uncovered place consecrated to a divinity: a canopied altar-tomb:—pl.

The gens had its own sacellum or chapel, and its own sacra or religious rites.

Splendidum etiam illud sacellum westmonasterij, magno sumptu atque magnificentia ab eodem est conditum.