This report presents the preliminary results of excavations conducted in the areas around Korogwe district in Tanga region, north eastern Tanzania. The work was carried out over two field seasons between the months of July-September 2008 and 2009. This investigation forms part of a broader research program undertaken by the Historical Ecologies of East African Landscapes (HEEAL) project based at the University of York, UK. This parent project seeks to reconstruct the long term history of human impacts on East African landscapes over the last 500 years. In keeping with this broader objective, the project outlined here aims to investigate the relationship between the expansion of the caravan trade during the 19th century and possible agronomic transformation and land-use changes in the areas crossed by the caravan trade routes in the lower Pangani, north eastern Tanzania.European Union Marie Curie Excellence Grant