Complex sentence: A Coelleira is a small island located in the entrance of the ria of O Barqueiro, that is part of the "Rias Altas" or "Upper Estuaries" in the north coast of Galicia, Spain.
Split into simpler sentences: A Coelleira is a small island located in the entrance of the ria of O Barqueiro. This is part of the "Rias Altas" or "Upper Estuaries" in the north coast of Galicia, Spain.