Stone Age Europe

Waterlogged Day, Waterlogged Wood….

My name is Anne Crone and I am a post-excavation project manager at AOC Archaeology Group, working in their Loanhead office in Scotland. I am currently managing a number of large post-excavation projects, the most important of which is the Cults Landscape Project – important to me because I also carried out the fieldwork in partnership with my colleague, Graeme Cavers, and because it has enabled me to ‘indulge’ many of my research interests, in crannogs, waterlogged wood and dendrochronology.

crannog

The Cults Loch crannog under excavation

 

The fieldwork project has involved the excavation of a number of sites in and around Cults Loch, a small kettlehole loch at Castle Kennedy, near Stranraer in south-west Scotland. The project arose out of the initiative of the Scottish Wetland Archaeology Programme, the aim of which was to more fully integrate wetland archaeology into more mainstream ‘dryland’ archaeology. So we selected a landscape in which the archaeological sites appear to cluster around the loch and within which there were two crannogs – these are man-made islands found only in Scotland and Ireland and which are repositories of all sorts of waterlogged organic goodies!  We have excavated one of the crannogs which sits on a little man-made promontory jutting out into the loch, the promontory fort that lies on the other side of the loch, overlooking the crannog, and one of the palisaded enclosures that lies on the grassland around the loch.

And now we are halfway through the post-excavation programme.  We know that this is a later prehistoric landscape because we have 1st millennium BC radiocarbon dates from the promontory fort and crannog. But more exciting – I have been able to dendro-date some of the oak timbers from the crannog and we now know that most of the building activity took place in the 2nd and 3rd decades of the 5th century BC, and that there was refurbishment of the causeway in 193 BC – for me these more specific dates bring the occupants more clearly into focus…

Today – well, it started off with a 3 mile walk to work – usually a great start when I can think through my schedule for the day – but today the heavens opened and I was soaked by the time I arrived at the office! After drying out I settled down at my desk to read the report on the soil micromorphology from the crannog which my colleague Lynne Roy has just finished. As project manager I need to edit and check each report before it is sent out to the client, in this case Historic Scotland, but as the archaeologist I also want to read it for the insights it will give me into the taphonomy of the deposits on the crannog. And it is really fascinating! We found large patches of laminated plant litter, interspersed with gravel and sand layers which we interpreted as floor coverings that had been repeatedly renewed. Lynne’s analysis has revealed that the occupants probably cleaned away as much as possible of the dirty floor coverings before scattering over a sand and gravel subfloor and then laying down fresh plant litter. She can tell which surfaces were exposed for a length of time while others were covered almost immediately. And her work on the hearth debris indicates that peat turves were probably the main form of fuel on the site.

recording_timbers

Recording timbers in the warehouse

 

Like many archaeologists the majority of my time is spent at my desk, writing reports, editing reports, filling in/updating spreadsheets, and dealing with emails. So it is a pleasure to be able to don my lab coat and spend some time in our warehouse handling waterlogged wood. I am currently writing the report on the structural timbers from the crannog. The majority of the timbers were undressed logs or roundwood stakes, mostly of alder and oak, so most of the recording and sampling was done on the crannog. Samples for dendro and species identification were brought back to the lab but we only brought back complete timbers which displayed interesting carpentry details and were worthy of conservation. I have been completing the recording of these timbers and deciding which ones should be illustrated for the final report. There are some interesting timbers in the assemblage –large horizontal timbers with square mortises, presumably to take vertical posts, but what is the function of the horizontal timbers which have very narrow notches cut diagonally across them? Next week I will be off to the library to look for comparanda and to find explanations for some of the more unusual aspects of the assemblage

Read more about Cults Loch here

 

A brief visit to South Cadbury

Whilst working at Ham Hill in Somerset it would be a crime not to visit any of the other archaeology in the area so today I went on a brief visit with some of the students to South Cadbury. 

A cool site, very dramatic, as hillforts tend to be, and relativly easy to see and understand.  Its just pasture on top with some wooded areas on a limited area of the ramparts, making for good preservation and easy access. 

It is a shame that there is limited interpretation on site, with just one small scratched panel in the car park.   The local pub however have made us of this and have a small but good display all along one wall!  Heritage can bring in business!

 

Lunch eaten… More PhD stuff!

Unfortunately the camera has died on me, I’m an idiot for forgetting the charger so no more pictures or videos :(.  So here is a bit of improvisation instead…

This is a digitised version of Broxmouth, the excavation archive I am working on.  There were three entrances, two visible on cropmarks but a third was discovered in the west, having been blocked up after a short period of use.  Seven houses were identified in the interior however there are the remains of several structures both underlying and overlying the inner ditch in the west.  There are also structures overying the infilled south-west entrance ditches as well as more ephemeral postholes, pits etc scattered between the houses.  There is also a cemetery to the north containing ten individuals to nine graves.  This is unusual for an Iron Age site and it was found by accident when a trench was initially put on the north side to investigate the ditches on that side.  The project is currently awaiting radiocarbon dates to help flesh out the stratigraphic sequence of the site but we have occupation evidence tentatively going back to the early Iron Age, if not the late Bronze Age and the latest date we have so far is post 400AD which shows this site has a long history!

 

Back to my actual day… In typical fashion I have moved onto something slightly different.  It is quite easy when you are this close to handing in for PhD fatigue to set in so to prevent too much procrastination and boredom, I am currently re-assessing my area size analysis.  I have a specific study area in East Lothian to investigate the later prehistoric settlement in the area, broadly contemporary with Broxmouth.  I measured all the internal areas of the enclosed sites (note: I don’t believe in the hillfort/enclosure division, not in this particular area!) and analysed the varying sizes according to their shape and number of ditches to see if there are any notable patterns.  Right now I am pondering over whether large single ditched enclosed sites could be comparable to the Wessex examples.  The Wessex Hillforts Project found that large, single ditched sites tended to be devoid of internal features (seen from geophysical surveys) therefore may have been meeting places or ceremonial sites as opposed to settlements.  However care has to be taken in comparing two wildly disparate geopraphical areas, and also the Wessex examples are several hectares in size.  My sites are no larger than a hectare (with the exeption of Traprain Law).  However, it could be a useful analogy!

Introduction to a day of ‘post-ex’, research and education

I’m taking part in the Day of Archaeology to demonstrate that there’s more to archaeology than digging. I’m current involved in archaeological  research, although I also teach archaeology (primarily within the Adult Education sector, but I have taught workshops in schools). At present, I am preparing to teach a workshop on Derbyshire in the Roman period and early Middle Ages, writing up research I undertook whilst at the University of Sheffield, and completing post-excavation analysis on the late pre-Roman Iron Age (LPRIA), Roman, and early medieval activity at Crickley Hill, Gloucestershire, in order to write volume 6 in the series of site reports in this series. For more information on this work, I’ve started a website http://crickleyhillad.community.officelive.com/, but I’ve provided a summary of the site here.

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