The El Berrocal Project was preceded by a preliminary study (0 Phase) started in 1989, intended to prepare and ensuring the performance of the actual Project that was divided in two two-year phases. At its very origin the Project was mainly conceived to achieve strategic objectives of methodology and instrumentation development and building up of R and D working teams. All this addressed to the study of radionuclide natural migration in a fractured granitic environment. As the Project progress it incorporates the concept of Natural Analogue and subsequently the Project objectives are more directly focussed to the Performance Assessment of HLRW repositories. In this global introduction to the Project an overview is given that covers organisational aspects, together with a summary of the sequence of activities. A final list of the technical reports produced within the project Is included