Showing posts with label high mountain archaeology. Show all posts
Showing posts with label high mountain archaeology. Show all posts

Saturday, 13 August 2016

Glacial Finds from the Langgrubenjoch (Gde. Mals and Gde. Schnals) in South Tyrol. Preliminary Report


We've published a preliminary report in german language about our project on Langgrubenjoch (South-Tyrol) in the german journal Archäologisches Korrespondenzblatt.
It has a profile as a topical scientific journal on issues of Prehistoric, Roman and Medieval archaeology and related sciences in Europe. Beside topical debates the journal provides a place for the publication of new finds and short analysis of general interest. (Definition by RGZM)
Bringing home the finds

Finds from thawing névés and ice fields were discovered at the Langgrubenjoch (3017 m a. s. l.) between Matscher- and Schnalstal in the southern Ötztal Alps. The finds are predominantly made up of wooden parts, many of which are fragments of boards and show tool marks. 
GPS
First radiocarbon and dendro dates reveal artefacts dating back to the Copper Period, middle to late Bronze Age as well as the Roman period. The toolmarks and comparable finds suggest that the pieces of boards consisting of larch (Larix decidua) were the remains of the roof shingles of a late Bronze Age hut. 
Parallel documentation with Geopaparazzi
Although the Langgrubenjoch cannot be crossed easily it is the shortest route between the Obere Vinschgau in the area of Mals and Schnalstal and the region north of the alpine main ridge. The periods of time indicated by the finds, i. e. the late 3 rd and 2 nd millennia BC as well as the Rom an period, witnessed a relatively low extent of the glaciers or warm phases.

Documentation
In those times the Langgrubenjoch was possibly easier accessible and therefore used more intensively.

Glacial Finds from the Langgrubenjoch (Gde. Mals and Gde. Schnals) in South Tyrol. Preliminary Report

Authors:
Alessandro Bezzi, Giuseppe Naponiello, Rupert Gietl (Arc-Team)
Hubert Steiner (Cult. Heritage Dep. of South-Tyrol)
Kurt Nicolussi, Thomas Pichler (Uni Innsbruck)

Archäologisches Korrespondenzblatt 46 (2016) 167-182.

Related postings & videos:

Saturday, 19 March 2016

Archaeology as a profession

This January, we were asked to give a presentation about archeology at the local high school, the "Liceo Bertrand Russell" of Cles (TN - Italy). This short lesson was intended to be an explanation of archeology as a profession for the students, to orient their choice for a University and later for a real job.
For this reason, the 28th of that month, we prepared some slides to show our experience in the world of archeology, giving the right importance to professional perspective, which is pretty different from the academic (University) or institutional (Superintendence) one.
Here below I report the entire presentation, which can be better seen at this link. For a better comprehension, I will write a short description for each slide:
 




SLIDE 1

This presentation is taking into consideration archaeology as a professional work. 

SLIDE 2

Archeology analyses the physical relations of different layers within a stratigraphic deposit, in order to reconstruct their chronological sequence.

SLIDE 3

All the presented images, video and media, come from past Arc-Team's project (www.arc-team.com)

SLIDE 4

Archeology has different branches (depending on different perspectives)

SLIDE 5

For professional archaeologists the main perspective is the logistical one, from which depends the approach to the archaeological project.

SLIDE 6

Under this point of view, the so-called urban archeology is probably the most common and simple.

SLIDE 7

Aerial archeology has more complicated peculiarities, but since 2008, thanks to the use of open hardware RC (Radio-Commaned) UAV (Unmanned Aerial Vehicles) we are able to face these difficulties.

SLIDE 8

Thanks to the use of UAVs (drones) it is now possible to perform a good 3D documentation from the sky...

SLIDE 9
... or to analyze vast areas for survey projects, even it it is strongly recommended to verify the collected data on the landscape (a "no boot on the ground" is not a good approach in archeology).

SLIDE 10

Also speleoarchaeology presents some difficulties, especially in 3D documenting underground environments.

SLIDE 11

Since 2009, we faced the problem adapting our 3D documentation techniques (Structure from Motion and Multi-View Stereo Reconstruction) to this particular situation.

SLIDE 12

A 3D underground documentation can be later connected with the traditiona surface documentation.

SLIDE 13

High mountain archeology is another field where the surrounding landscape influences the traditional techniques.

SLIDE 14

This short video summarizes most of the peculiarities of these kind of projects.

SLIDE 15

Underwater archeology also needs its own methodology and equipment (more than other sub-disciplines)...

SLIDE 16-22

... but also traditional instrument (such as RTK G.P.S and total stations) can be somehow used to georeference the submerged archaeological evidences...

SLIDE 23

... in the same way in which also traditional 3D documentation can be performed underwater.

SLIDE 24

The peculiarities regarding glacial archeology are more related with the excellent grade of preservation that characterizes the finds, but it is often connected with logistical conditions which are similar (or worst) to the ones of high mountain archeology. 

SLIDE 25

Again a short video can summarize the situation.

SLIDE 26

Another important topic for professional archaeologists is related with geography.

SLIDE 27

For instance, European Archeology is very different from Caucasian Archeology or  Middle East Archeology...

SLIDE 28

... and specific methodology (e.g. in recording data) can change from state to state (e.g. the Austrian recording sheet is different from the Italian one), at least in Europe, where the archaeological discipline is strictly codified.

SLIDE 29

Another video can show the peculiarities of an archaeological mission abroad.

SLIDE 30

Of course, archeology is also divided into many disciplines and sub-disciplines, which need their own techniques, equipment and know-how.

SLIDE 31

For instance, archaeoanthorpoloy presents specific techniques both in the field ...

SLIDE 32

... and in the laboratory, with particular analyses such as ...

SLIDE 33

... ostemometry ... 

SLIDE 34

... ergonomy ...

SLIDE 35

... paleopathology ...

SLIDE 36

... or forensic science techinques ...

SLIDE 37

... such as forensic facial reconstructions.

SLIDE 38

Mummiology can be considered an archaeological field itself ...

SLIDE 39-41

... where new technologies, such as 3D printing, are giving excellent results.

SLIDE 42

Other fields are archaeozoology ...

SLIDE 43

... archaeobothany ...

SLIDE 44

 ... with carpology ...

SLIDE 45

... and wood sciences ...

SLIDE 46

... or geoarchaeology ...

SLIDE 47

... with its intra-site analyses, such as the ones performed with analytical chemistry ...

SLIDE 48

... or the physical analyses connected with the identification of the  layer's texture and skeleton, ...

SLIDE 49

... or its extra-site analyses, like sedimentology ...

SLIDE 50

... or colorimetry.

SLIDE 51

Also geophysical prospections, like Electrical Resistivity Imaging, are a very important archaeological field, able to give some important indications before starting an extensive excavation.

SLIDE 52

Of course, museum studies disciplines are also strictly connected with archeology, giving the opportunity to share the collected data with techniques like 4D special effects ...

SLIDE 53

... or motion capture ...

SLIDE 54

... 3D printing ...

SLIDE 55

... digital holograms ...

SLIDE 56

... or augmented reality.

SLIDE 57

Last but not least, for a professional archaeologist is also very important to evaluate the different topic of a project, which can request specific knowledge.

SLIDE 58

For instance a World War 1 related project will be connected with Conflict Archeology techniques ...

SLIDE 59

... while projects which interact with very old materials (million of years) can be supported by paleo-artistic reconstructions ...

SLIDE 60

... and ethnoarchaeological studies can help in understanding ancient finds and structures.

CONCLUSION

For a professional archaeological society the first topic to take into consideration is the logistics of the project and, secondly, the geography; basing on its human resources, the company will be able to face the different disciplines and sub-disciplines of archeology with its specialists. The topic of the project is normally not so important, as a professional companies try often to be engaged in all the possible projects.

A different approach can be followed by academy, which is often primarily interested in the topic of a project (which can be connected with its research interests). This choice often guides all the other considerations, which mainly involve the technical researchers at disposal, and rarely geography (which is often not a problem for academy) or logistics (since some environment are simply prohibitive for a university, also for safety rules).

Institutional archeology (Superintendences) is often in between these two positions, at least in Italy, since it does not take into consideration the topic of a project, being guided by the existing rules concerning the protection of the Cultural Heritage; moreover it often externalizes the specific operations to professional companies. Also geography does not influence institutional archeology, since it is territorial, while logistics can be an important voice in the budget, influencing the operative decisions.



Tuesday, 13 May 2014

Arc-Team: Professionals at Work - the "Frozen Stories" videoclip


Since several years, the Department of Archaeology of the Autonomous Province of South-Tyrol has been documenting and rescuing various archaeological remains in high alpine environment. The project area for late summer 2013 was the Langgrubenjoch a passage between the Schnalser- and the Matscher-Valley.


The site is located on an altitude of about 3100m.a.s.l. (10170ft) and offers a striking variety of wooden finds from prehistory to antiquity.


The project was directed by Dr. Hubert Steiner, member of the Department of Archaeology of the Autonomous Province of South-Tyrol, who is also one of the curators of the exibition "FROZEN STORIES - Discoveries in the Alpine glaciers" at the South Tyrol Museum of Archaeology (Bozen) from 25 February 2014 to 22 February 2015.


+Luca Bezzi announced it on ATOR first in february 2014 in the post "High mountain archaeology: Frozen Stories".


The South Tyrol Museum of Archaeology is home of the "Iceman Ötzi"  one of the biggest archaeological sensations in the 20th century. The site of Langgrubenjoch is situated just a few kilometers from his finding place.

Frozen Stories provides for the first time some of the findings from Langgrubenjoch toegether with a video clip, filmed during the survey by ourselves, which shows the whole archaeological working process in such extreme circumstances.


The publication on ATOR was possible by courtesy of the directorship of the South Tyrol Museum of Archaeology, represented by Andreas Putzer. Thanks also to Hubert Schönegger and the Team of Geosfilm, for converting the video and splitting the soundtrack.



Wednesday, 30 April 2014

The Austro-Hungarian emplacements on top of Mt. Roteck

(2390m)
Dolomites / South-Tyrol 

 A case study for extensive survey and documentation on occasion of the 100th anniversary of the beginning of WW1 on the Italian front in May 2015.

As reported on ATOR in summer 2013, Arc-Team is pushing ahead the plan of  mapping extensive areas of the high alpine frontline of WW1 from the Swiss border to the Dolomites.
Our approach consists in a very detailed DGPS-survey, terrestrial structure from motion, geolocalized images, archeological description and aerial survey by our drone.
Of course we are basing the whole working process on Open Source Soft- and, where possible , also on Hardware.
Now we want to share the latest version of a presentation, given originally in occasion of the 7th Fields Of Conflict Conference in Budapest (Hungary) in October 18.-21. 2012.
It outlines the characteristics of the high alpine working environment, the nature of the WW1 remains, the challenges to meet, our project strategy and first results.

Monday, 21 April 2014

„@MAP“ the Arc-Team Mobile Mapping Platform


In Summer 2013 Arc-Team was charged with the task to survey a micro-DTM on an archaeological area of about 10.000 m2.
The underlying archaeological remains on the side cause small differences in height on the surface and the shape of a nearly 60 x 60 meters large structure was known from aerial photographs.


We've had only 10 hours of fieldwork at our disposal and exploring our options we've made some numbers games:
  • Doing the job with total station would allow us to take an average of 5 points per minute, which means a (very optimistic) total amount of 3000 points in 10 hours. (2 operators)

  • Using our DGPS, the stroke per minute increases up to a maximum of 15 points per minute, working with continuous point capturing mode, having an operator on the field who's stepping forward, putting down the pole and balancing the bubble eyery 4 seconds. The total amount in this case is about 9000 points. This means an average of only 0,9 points / m2. That would be far to few...


So what would we going to do?

In this occasion we've had the idea to adapt a monocycle in order to have a rollable vehicle carrying the GPS antenna and maintaining a constant distance to the ground.
The result you can admire in the illustration below.



By the help of this tool we were able to increase the stroke on 42 points / minute and a total amount of almost 25.000 points. This means an average of at least 2,5 points / m2.




The result of our efforts was quite lovely: GRASS GIS produced a high quality DTM from which we derive 3D views, isolines and shaded reliefs.

The official name of the trolley is „@MAP“ Arc-Team Mobile Mapping Platform. ;-)

Friday, 7 February 2014

High mountain archaeology: Frozen Stories

In the last years we (Arc-Team) had to deal with an increasing number of missions or emergency interventions in high mountain environment, so that our team started to specialized in this new branch of archeology. 
High mountain archeology is strictly connected with climate changes for mainly two reasons: 

1) the actual global warming implicates the retreat of glaciers and the subsequent discovery of artifacts and ecofacts, which have been preserved by the ice until now

2) artifacts and ecofatcs released by the glacier melting phenomenon are a fundamental source of informations regarding climate change itself (epsecially from the point of view of paleoclimatology)

The emergency interventions are caused by the preservation problems connected with the organic material of many archaeological finds, which, once freed from ice, begin to deteriorate very quickly. Moreover many areas of discovery are threatened by landslides of the rocks, which in few days cover the new empty space let by the glacier retreat.
The main problems of an high mountain archaeological mission regard logistic difficulties. As an example, the video below shows the landing during the intervention we did to recover some ecofacts in the Oetztal (AT) in 2012.


  

In this particular mission we had to deal with the limited internal space of the helicopter, which threatened to affect the number of "airborne archaeologists" and the amount of different equipment, necessary for the field-work. In fact, for this project (a fast one-day operation), we planned a strategy based on the redundancy of the instruments (in a similar way to an underwater archeology mission), so that it would have been possible to change methodology in case of unforeseen problems. More specifically or first plan was to georeference all the archaeological finds documentations, based on different techniques (2D photomosaic, 3D SfM models, etc...), using our RTK GPS, while the B-plan was simply to set up a local coordinate system with our total station. Following the first axiom of Murphy's laws (Anything that can go wrong — will go wrong), we could not use directly the GPS, because the area of archaeological interest was completely shielded by mountains and the satellite signal, as well as the radio signal from the base station to the rover, was accessible only on the top of the surrounding picks. To avoid this problem we climbed on one of these picks and placed two fixed points with the rover on the ridge which was closets to the area of interest (without any optical occlusion). In this way, at a later time, we could use the total station to document the archaeological evidences, georeferencing the directly on the UTM system.

Alessandro Bezzi placing a fixpoint with the GPS rover

After this mission, we learned to not underestimate logistic problems in high mountain archaeological project and to study alternative solutions for emergency cases (mainly based on equipment redundancy). 

This long premise is intended to be an introduction to the main topic of this post: the exhibition "FROZEN STORIES - Discoveries in the Alpine glaciers", which will take place in the city of Bolzano/Bozen/Bulsan, hosted in the  South Tyrol Museum of Archaeology (where is preserved the mummy of Similaun, Oetzy) form 22 /02/2014 till 22/02/2015. 

The poster of the exhibition


If you plan to pay a visit to the exhibition, among other (more) interesting things, you could see some of our high mountain archaeological expeditions :)

PS
The Arc-Team contribution to the exhibition is mainly based on the Langrub Joch project, in which I did not participate directly, but that was lead by +Alessandro Bezzi, +Rupert Gietl and +Giuseppe Naponiello, under the scientific direction of Dr. Subert Steiner of the Archaeological Office of the Provincia Autonoma di Bolzano / Autonome Provinz Suedtirol. Maybe one of my colleagues will write a post about this project in the feature.
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