guadiana river flows through the deep gully in schists. pulo do lobo. alentejo. portugal

alentejo bank basalt bath beautiful beauty blue calm country eroded erosion europe flow foothill gabbro green greenschists guadiana gully hill isolated landscape layer limestone metamorphic rocks natural park nobody place portugal portuguese pulo do lobo rapids river rock scenery scenic schist serpentine shale sky stagnant still stone stream twisted valley water waterfall