No smoking gun, but PugJesus gives the time period “medieval” (not a term used academically for time periods),

‘Medieval’ and even ‘Medieval studies’ remain academically accepted terms.

but the roundhouse is a typically pre-Roman Iron Age dwelling in Britain, so there’s some inconsistency there.

Rural houses of that design, of thatch, wattle, and wooden supports, are common all the way up to the early modern period in numerous regions of Europe.

Not sure the clothing is very “medieval” either.

Hose, braies, tunics, what am I missing here that isn’t medieval?

Well, sort of. You want to get a good bit inside the waterbearing layer, and since that’s waterbearing, it tends to flow. And that makes the dirt on top of it collapse, which is makes even a stable slope slide down and kill you.

But it really doesn’t make sense to dig like this, because this is a LOT of digging to make what is in the end, a very narrow hole.

Normally you’d make a small hole, place a perforated tube inside, then get inside and start digging down. As you remove dirt from under the ring and inside the hole, the ring slides down, and the people on top extend it upwards. Then, ideally, you seal the bottom of the well with something like clay so your water doesn’t get too muddy, and you’re good to go!

Depends on the soil.

In very sandy ground, it’s rather fast.