Original sentence: From its position it dominated the north slope of cerro Marihueñu and the valley of Colcura in whose extreme west is the mouth of the the riachuelo Colcura that empties into the cove of Colcura
Edited sentence: From its position it dominated the north slope of cerro Marihueñu and the valley of Colcura in whose extreme west is the mouth of the riachuelo Colcura that empties into the cove of Colcura