Browse image
Resolutions offered for this image:
5614 x 6000 pixels 500 x 534 pixels
Cloud masks available for this image:

Spacecraft nadir point: 21.0° N, 3.3° E

Photo center point: 21.5° N, 2.5° E

Photo center point by machine learning:

Nadir to Photo Center: Northwest

Spacecraft Altitude: 162 nautical miles (300km)
Click for a map
Width Height Annotated Cropped Purpose Links
5614 pixels 6000 pixels No No Download Image
500 pixels 534 pixels No No Download Image
Other options available:
Download Packaged File
Download a Google Earth KML for this Image
View photo footprint information
Download a GeoTIFF for this photo
Image Caption:

The effects of wind and water--Dominant winds from the southeast
blow dustings of sand across a low massif of dark rock in south-
ern Algeria (top), giving rise to sand streaks downwind. All
along the east side of the massif lies a long sand dune parallel-
ing the windward edge of the massif (top right). This is an ex-
cellent example of an "echo dune." The effects of flowing water
are less dominant than those of wind in this area: the major,
north-flowing drainage of the area can be seen in the middle of
the image. Image scale: approximately 50 miles along a side.
(S41-90-010, 012)