pulo do lobo (wolf's leap) waterfall and cascade of river guadiana, alentejo, portugal

waterfall pulo do lobo guadiana portugal alentejo architecture bank sky blue cascata construction current flow geologic hill landmark landscape mountain natural nature nobody old park portuguese rapids region river rock stone stream strong valley vegetation water cascades narrow gorge aqueduct remnants roman schist basalt gabbro greenschists metamorphic rocks serpentine gully