"Stop! Stop !"
Diotima shouts and runs to the bowl where it shattered against the wall. She starts gathering the fragments, hoping this was just a recent castoff of no value whatsoever.
((The Spell is duration is diameter. An action will have to be taken to stop it.))
Eve starts wiping the mud out of her eye, then decides to stop the run away spell first. She casts a spontaneous level four unraveling the fabric of terram.
potential botch! Really? The dice hate me. Assuming no more than three botch dice the golden chord still reduces it to just one die. No botch! Huzzah!
The floor trembles as more dirt and now stones begins flying out of the hole. Diotima is also buffeted with dirt and stones. She hears something else shatter against the walls.
Diotima tries to stop the runaway magic herself, starting with a quick spontaneous effect, cast without Fatigue
Unravel the Fabric of Terram, level 3 (Base 1, +2 Voice, Mom, Ind), dispels a hermetic Terram spell of up to level 5. Casting Total (1 Stamina + 9 Perdo + 5 Vim + Aura)/5 = 3 assuming no hostile aura.
If that does not work she ramps it up to a Fatigue casting:
Unravel the Fabric of Terram, spontaneous casting, Range Voice, Duration Momentary, Target Individual, open ended level: Casting Total (1 Stamina + 9 Perdo + 5 Vim + ? Aura + 2 Dice Roll)/2 = 8 (without aura) -> dispels a hermetic Terram spell of up to level 18.
invisiblecastle.com/roller/view/4312950/ -> the roll
Diotima must push herself to negate the spell that has gone out of control. ( 1 fatigue ). The dirt and rocks stop flying about. The room is a mess with stones and dirt everywhere. The hole around the larger stone is much deeper and wider now. 2' deep around the stone and about 1.5' wide.
Examining the pottery, Diotima can see it is a Roman design with some artwork on it. It will take a while to reassemble it to see what it might have looked like.
"Right, that's better !"
Diotima sighs, and takes stock of the situation.
"All right, no more magic, we'll do this the old-fashioned way. You and you" she points at two of the workers "collect all the pottery fragments, carefully, so I can put them back together later. Send them back to the oppidum when you have them all. The rest of you, start clearing out the room, talk with the senechal here about where to put it all. We'll continue digging when the room is clear"
After a day or so of clean up and rearranging the digging begins again. Diotima finds a small shelf carved into the back of what she is calling the alter. That is where, she is guessing the pottery came from.
Digging slowly for a week to widen and deepen the hole around the alter stone finds no more pottery. The Alter stone has carvings on it of what looks like a harvest festival . The left side ( when facing the front) shows the wheat being threshed. The back has a scene of a wheat harvest. on the front. The scene on the right of the alter shows the grain being put in large containers with some liquid then emptied into a barrel twice as large as the figures in the carving.
Some of the carvings look Roman. Others do not.
The pottery was plate and bowl. The same wheat motifs are seen on both with faded paint.
After getting about 3' down in the hole a tile floor is found.
"Well done, everyone ! Now, let's focus on uncovering the bottom of the fresco on the back wall next, and uncovering the floor between the altar and that wall."
After about a week the floor is carefully cleared. It is a tile mosaic on the floor that Diotima has seen in other Roman buildings of the 1st century BC. The fresco is a bit trickier as ther are parts that seem not Roman and other parts do. She would guess that the romans either added to an existing fresco or repaired it to keep the same scene.
Diotima finds a odd markings on the floor near the alter stone where the mosaic does not fit together well. Moving several of the pieces revels what she things could be a track in the floor.