
1) Ancient Roman festival
Found on
https://www.crosswordclues.com/clue/septimontium

The Septimontium was a pre-urban festival celebrated in ancient Rome by montani, residents of seven (sept-) communities associated with hills or peaks (montes): Oppius, Palatium, Velia, Fagutal, Cermalus, Caelius, and Cispius. The Septimontium was celebrated in September, or, according to later calendars, on 11 December. It was not a public festiv...
Found on
http://en.wikipedia.org/wiki/Septimontium
No exact match found.