High mechanical advantage rigging system. The system shown uses a 35:1 MA, pulled by an 18hp compact tractor.
The well provided water at 4 meters 13 feet) . 1500 gallons of fresh water (5676 liters) which replenishes itself in a few hours. At 2 meters a piece of a pot was uncovered. At 3 meters rocks with veins of what appears to be some metal was excavated.
Brave little creatures. BBC Planet Earth.
Zurich, Switzerland