It was an odd day, weather wise. Largely dry with just one quick, light shower, windy at times, sunny spells… Luckily nothing interfered with the fieldwork!
The res team consisted of myself (when I wasn’t putting in grids for people), Ellen, Tim and Pauline. They pulled out the stops and managed a record-breaking eight grid squares. Area-wise, that is what the GPR covers in an average day, but for resistance survey at 0.5m intervals, that is very good going. Well done everyone.
The resistance survey at the end of day 32.
Today’s grids behaved themselves and make the four odd ones from yesterday stand-out even more. I did make sure that some of the connectors were off the ground today. How annoying. We may have to re-do those four grids. The survey did, however, show the buildings along the road in the SE corner beautifully. The big question… where now? North to the sinuous ditch? South for more shops? West to cover the cross roads? Only four days surveying left, and we have to assume that we won’t cover eight squares every day.
The mag team also had a very successful day in the Macellum field.
Detail of the mag survey showing the Macellum field.
We can just see a hint of the cross-roads running NE-SW across Watling Street. The ‘1955 ditch’ barely shows. With the eye of faith one might see it in the high readings along the edge of the cross-road, but very much with the eye of faith. Is the ditch just so built over we cannot see it? Or was it never built here?
With just four survey days left to go, the team is getting close to finishing the field, but I think we are a day or two short of being able to do that.
The entire mag survey to date.
Way down across the field, the GPR team tackled another fiddly staggered bit along the hedge line. In the next three images I have made the previous days’ surveys partially transparent.
The day 32 GPR, slice 3 (12.5 to 15.5ns).
The day 32 GPR, slice 4 (15.5 to 18.5ns).
The day 32 GPR, slice 5 (18.5 to 21.5ns).
The curious shallow valley to the west of the surveyed area (‘valley’ seems a strong word for it!) that runs down the hill towards the temple is just as devoid of buildings or other recognizable archaeological features as the mag data. In all three time slices not a great deal shows. Was this valley always empty? Or has the archaeology been eroded away, or even buried? Difficult to say, There is, however, a long narrow building just to the right of the middle of the surveyed area almost parallel with the hedgerow. It seems fairly ephemeral, but it definitely there and one corner was picked-up in last year’s grid to the south.
Although the GPR hasn’t covered as much as the mag, we have still collected a mass of data.
Montage showing the area surveyed with the GPR to date.
It certainly takes-up a large chunk of my hard disk.
Many thanks to everyone who came out today and worked so hard. A very successful day all round. Our next survey day is on Thursday.