Not really another day, another wadi, more the same day and the same wadi as yesterday's image.
Today's photo shows the wadi stretching into the distance where it makes a left hand turn and disappears behind a headland in the distance.
The flow marks in the wadi are more evident here and you can see the density of the bushes appears to increase as the wadi slowly descends to the plain hidden behind the headland.
Layers of hard and soft rock are more plainly evident. Then, as now, I was contemplating the formation of this landscape, wondering over how many years it took to form and what happened to all the water that carved out this wadi. Maybe some of if filtered down through the layers of rock to the Nubian Sandstone fossil aquifer.
Oil exploration in the 1950s led to the discovery of this fresh water aquifer which is believed to have accumulated during the last ice age. My guess then, is that with the ice covering much of Europe, the climate here would have been more temperate with much more rainfall and flowing rivers and this would have been a lush and verdant landscape, teeming with life. Is this a model for the potential effects of climate change and global warming on temperate zones of today?
Now I'll have to see if I can figure out the temperature rise in this part of the world since the last ice age.
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