The map shows Calang as seen on March 13,
2009, by the satellite QuickBird (resolution 0.6m). The four squares stand
for the extents of detail maps showing the area at different points of
time (April 2004, January 2005, March 2009) to depict different areas in
and around Calang where reconstruction activities were performed by the
German Red Cross (DRK) over the last years.