Ouled-Naïl Range
| Ouled Naïl Range سلسلة جبال أولاد نايل |
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Landscape of the range in the winter with the Djebel Selat near Bou Saada
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| Highest point | |
| Peak | Djebel Lazrag |
| Elevation | 1,491 m (4,892 ft) |
| Coordinates | 34°40′0″N 3°24′0″E / 34.66667°N 3.40000°ECoordinates: 34°40′0″N 3°24′0″E / 34.66667°N 3.40000°E |
| Dimensions | |
| Length | 180 km (110 mi) ENE/WSW |
| Width | 70 km (43 mi) NNW/SSE |
| Geography | |
 Ouled Naïl Range
سلسلة جبال أولاد نايل |
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| Country | Algeria |
| States/Provinces | M'Sila Province, Djelfa Province and Laghouat Province |
| Parent range | Saharan Atlas |
| Geology | |
| Orogeny | Alpine orogeny |
| Age of rock | Early Tertiary |
The Ouled Naïl Range (Arabic: سلسلة جبال أولاد نايل, French: Monts des Ouled Naïl) is a mountain range in Algeria, part of the Saharan Atlas of the greater Atlas Mountain System. The range is named after a confederation of nomadic and semi-nomadic tribes, all of which claim to hail from Arab ancestors that arrived in the mountains in the eleventh century.
The Ouled Naïl mountain range is formed by parallel ridges rising between the level 850 m high terrain of the Hodna region of the Hautes Plaines in the north and the 600 m of the southern plain of the Dayas. It is located in the eastern zone of the Saharan Atlas, with the Amour Range in the western and the Zab Range at the eastern end.
The range is formed by mountains created by folds of the early Tertiary which remained relatively undisturbed after formation but have been heavily eroded. Their altitude is relatively moderate, the highest point of the range, Djebel Lazrag (جبل الأزرق), not even reaching 1,500 m. However, towards the south the look of the highest ridges is quite spectacular, with jagged sandstone or limestone outcrops and almost vertical walls. The part facing the Sahara has a less encumbered terrain with smooth mountaintops separated by water gaps.
The climate is dry in all the surrounding areas, but the rainfall is slightly better on the mountains. Therefore cereal cultivation is possible in the heights, although with rather irregular results.Date palms are mostly absent throughout the range owing to the prevailing cold temperatures. They only grow in the few places at the feet of the Ouled Naïl mountains that are at an altitude below 600 m, such as near Bou Saada and the Oued Djedi.
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Wikipedia