Ermias Yohannes in his office in the Geological Survey of Eritrea in November 2003 mapping lime stone deposits by analysing aerial photographs in the northern surrounding of Alid geothermal prospect site for the planned cement factory in this area

Ermias Yohannes in his office in the Geological Survey of Eritrea in November 2003 mapping lime stone deposits by analysing aerial photographs in the northern surrounding of Alid geothermal prospect site for the planned cement factory in this area Source: BGR