footpath in stone weir with flowing water at coja beach of river alva, arganil portugal

footpath stone weir flowing water coja beach river alva arganil portugal small waterfalls banks green trees cascade water weir stone footpath flowing scenic pool swimming stairs nature outdoor lake waterfalls small vacation vibrant color freshness nobody tranquil park beautiful leaves fresh plant summer season riverside leisure environment green tourism travel countryside destination landscape trees beach fluvial village arganil coja portuguese portugal europe alva river mata stream