The Atlantic to the right - the harbour to the left, Muxia is lying on a peninsula on the "Costa de Morte" (= Coast of Death). The coast was given this name due to the many shipwrecks along the coast through the centuries. The worst one hit Muxia in November 2002, when the tanker ship "Prestige" broke open and sank, causing an enourmous oil spill, that polluted about 3000kms of coastline. In the center of this desaster was Muxia, where the black oilsludge came right into town. The massive cleanup of the oilspill, involving thousands of volunteers, was sucessful. Here are more details about the oilspill:

en.wikipedia.org/wiki/Prestige_oil_spill

fr.wikipedia.org/wiki/Prestige_(p%c3%a9trolier)