What surprises the traveler is the fact that paintings and prints have remained in such a condition, even when they are outdoors. It seems that the older had about 8000 years. The domestication of cattle is estimated at -7500 years.
Droughts and humidity have followed at all times:
-20,000 To -10,000: Barren post Aterian
-10,000 To -7500: Grand Wet
-7500 To -6500: Barren mid-Holocene
-6500 To -4500: Little Wet
-4500 To -3500: Barren post-Neolithic
-3500 To -3000: Wet post-Neolithic
-3000 To present: current Barren
Droughts and humidity have followed at all times:
-20,000 To -10,000: Barren post Aterian
-10,000 To -7500: Grand Wet
-7500 To -6500: Barren mid-Holocene
-6500 To -4500: Little Wet
-4500 To -3500: Barren post-Neolithic
-3500 To -3000: Wet post-Neolithic
-3000 To present: current Barren
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