Why do archeologists have to dig into the soil/sediment to find artifacts and archeological sites? Why are older things always deeper in the ground? Why would they not be found on the same level? Can dirt and debris pile up that bad?
In: Geology
Weeds come up through pavement, catching dirt and plant debris, other plants send out roots and grow in the soil over the paving. It doesn’t take that many years for the walk to disappear under vegetation and soil. More in places with falling leaves or floods or forests. Multiply that by hundreds or thousands of years, and it all gets very deep.
I didn’t really understand this until I had a house and garden to tend, just how fast it all builds up. Digging up to prepare beds I found a horseshoe, a toy Storm Trooper, marbles, broken china and beads, and a half dozen spoons.
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