anchor: The many little alleys, or yards, as they're called, were used to protect herds of sheep brought down from the fells during times of crisis.
positive: The many little alleys, or yards, as they're called, were used to protect herds of sheep as they were brought down from the fells during times of crisis.
negative: The many little alleys, or yards, as they're called, were used to protect herds of dogs brought down from the fells during times of crisis.