At the request of amul: wherein an intrepid group of Mons Electi magi and grogs explore the extent of the regio.
Need a cast (magi and companions) and crew (grogs) and some logistics need to be worked out. Princeps will not be going on this one. I've got this sketched out, nothing is finally (or finely!) detailed, so this will be mostly improvised. It should be worked out in the council thread who will be doin this particular story.
The Halls of Mons Electi on the magical side of the regio appear to have been cut from the side of the mountain itself. The courtyard between the various buildings, Fiona's cottage are all on a spot that looks to have been cleared from a mountain top, with the peak continuing to extend up to Jonah's abandoned sanctum. Actual travel below the mountain looks trecherous, but with some care someone might be able to find a path down. Far below it appears that there is a stream running through a narrow valley. The extent of the regio appears vast. There is little vegetatiou outside the occasional shrub. The air is cool, but never as cold one would expect it to be, given how high up in the mountains this halls are located. It may take a day or more to safely descend to the stream. Going up leads to Jonah's sanctum. It is well advertised that there is an entrance to a higher level of the regio accessible at the entrance to Jonah's cave (before a sancum marker), but one needs to be able to breath water or breath underwater, to travel up the regio that way.
So, there are a couple of choices: attempt to travel up the regio, or to explore the extent of this level.