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Those lines have nothing to do with animals. Those lines are generated by solifluction and frost heave. It is sometimes referred to as cryoplanation or soil creep. Basically as the thin hillside soil freezes and thaws it expands and contracts and because there is a slop it moves downslope. In addition rain combined with how the surface thaws before the ...


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Solifluction is not restricted to cold climates. Gelifluction on the other hand is, it requires by definition a permanent/seasonal layer of frozen soil. In periglazial environments the porewater above the frozen ground layer becomes easily saturated. Solifluction encompasses numerous processes, Gelifluction is one of them... The wikipedia page for ...


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All the major deserts are naturally formed by climate change in ancient times. Much of the Sahara, as recently as six or seven thousand years ago, was savannah of a sort now found in East Africa, and with a similar flora and fauna (acacia, crocodiles, giraffes, gazelle, lions, ostriches etc). However, deserts can be man made, and a good example of that is ...


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