Image 9a
"Feet-prints"
in Malta after a rainfall.
Chiseled grooves in a cart rut (Mt. Raimeux Switzerland).
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Aids
for the steps of the personnel in particularly broad ruts
("anti-slip" facility when carts are pushed and pulled). It
appears unprobable that the ruts were first worn out by the carts and that
these anti-slip facilities were then produced afterwards.
Image 9a |
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Image 9b Chiseled grooves in a cart rut (Mt. Raimeux Switzerland). |