The “Alpabzug” or “Alpabfahrt” are the Swiss names for bringing the cattle in the alpine pasture down to the farms in the valley where the winter is spent.
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Alpabzug in Lenk (Switzerland) Vacation Travel Video Guide

The “Alpabzug” or “Alpabfahrt” are the Swiss names for bringing the cattle in the alpine pasture down to the farms in the valley where the winter is spent.
source