opt/marble/share/marble/data/maps/earth/citylights
opt/marble/share/marble/data/maps/earth/clouds
opt/marble/share/marble/data/maps/earth/hikebikemap
+opt/marble/share/marble/data/maps/earth/hillshading
opt/marble/share/marble/data/maps/earth/osmarender
opt/marble/share/marble/data/maps/earth/plain
opt/marble/share/marble/data/maps/earth/precip-dec