With the aid of local people we were able to record a lot of new sites which had been unknown before. In the most cases finds were revealed accidentally during construction or farm work. As the discoveries get known quickly there are only a few sites which don't get affected by illegal diggings. So far we recorded 250 Nok sites. It seems there had been no preference concerning the position of the sites. But it's remarkable that the sites in the plain are always close to flat granitic hilltops. It is possible that it's due to their usability as some of the hilltops have dimples for pounding and grinding to crush cereals or to produce stone tools.

Nok sites

Nok sites (red). So far we excavated 50 sites (yellow). The excavated areas measured only a few sq. m as the focus of the studies had been on the development of a chronology. Large scale excavations are planned for 2012 to analyze settlement patterns. Close to the centre of the key study area the Nok Research Station Janjala is located.

Nok site Pangwari

Prospection methods like geomagnetics and the electrical resistivity tomography are helpful to define the intended area for the excavation with varying degrees of success!

Geomagnetic prospection
Geomagnetic prospection

Similar to the use of x-rays it's possible to make structures visible. Interesting structures turned out to be accumulations iron-bearing rock (laterite) which are typical for tropical soils. Also the adjacency of the crystalline ground may interfere with the results.

Electrical resistivity tomography

Geoelectrical measuring resistors in a 25x15 meter measured excavation area. When the excavation is to be seen whether and what lies behind the colored areas , such as waste pits. 

Measurements of electrical resistivity in an area of 25 to 15 m. By excavating the place will emerge whether and what is inside the colored areas, e. g. waist pits.