Browse image
Resolutions offered for this image:
720 x 480 pixels 5568 x 3712 pixels 640 x 427 pixels
Cloud masks available for this image:
Binary Heatmap

Spacecraft nadir point: 30.0° N, 39.8° E

Photo center point: 28.0° N, 41.1° E

Photo center point by machine learning: 28.02° N, 41.07° E

Nadir to Photo Center: Southeast

Spacecraft Altitude: 224 nautical miles (415km)
Click for a map
View an image on a map for this photo that has been georeferenced using machine learning.
Width Height Annotated Cropped Purpose Links
720 pixels 480 pixels Yes Yes Download Image
5568 pixels 3712 pixels No No Download Image
640 pixels 427 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:

Long-sustained westerly winds shaped the dunes surrounding the Saudi Arabian oasis of Jubbah in this photograph shot by an astronaut from the International Space Station (ISS). Jubbah sits in the protective wind shadow of Jabel Umm Sinman, which roughly translates from Arabic as "two camel-hump mountain"(// The hard, black rock of the mountain disrupts wind flow and blocks dunes from forming on its lee side. The area around Jabel Umm Sinman has been at the center of significant climatic and anthropological shifts during the Holocene, a geologic term for the past 10,000 years.

Jubbah is built in the basin of a paleolake in the middle of the Nefud Desert, about 650 kilometers (400 miles) northwest of Riyadh. A paleolake is an area where a lake previously existed, but no longer holds any water due to a change in climate. Today the ancient lakebed rests hundreds of feet below the neighboring dunes.

Prior to the desertification of the Arabian Peninsula, Jubbah Lake was one of a network of freshwater sources in what was then a more humid environment. Even as the region became more arid, Jubbah Lake likely continued to hold freshwater for some time due to its position amid the groundwater-recharging dunes. This continuous, extended period of freshwater made Jubbah a destination for early humans and animals in the Nefud Desert.

Among the dunes to the north of the city, a highway extends north-south through the desert, following a path historically taken by caravan traders. The highway and the modern agriculture - evident in the telltale circular fields of center-pivot irrigation - are just the latest iteration of human activity in the area. The mountain also contains petroglyphs that record the lifestyle and culture of early inhabitants. The petroglyphs, declared a UNESCO World Heritage Site, have been instrumental for archeologists and historians seeking to understand occupation and settlement patterns in the region.