opt/marble/share/marble/data/maps/moon
-opt/marble/share/marble/data/maps/earth/bluemarble
-opt/marble/share/marble/data/maps/earth/citylights
-opt/marble/share/marble/data/maps/earth/plain
opt/marble/share/marble/data/maps/earth/precip-dec
opt/marble/share/marble/data/maps/earth/precip-july
opt/marble/share/marble/data/maps/earth/schagen1689
-opt/marble/share/marble/data/maps/earth/srtm
opt/marble/share/marble/data/maps/earth/temp-dec
opt/marble/share/marble/data/maps/earth/temp-july
+opt/marble/share/marble/data/maps/earth/srtm/1
+opt/marble/share/marble/data/maps/earth/srtm/2
+opt/marble/share/marble/data/maps/earth/srtm/3