Aerial image of rain ponds in between sand dunes, Lencois Maranhenses, Maranhao, Brazil, South America

lencois maranhenses maranhao brazil rain ponds sand dunes pond dune shape curved pattern abstract landscape ripples ripple contours contour freshwater rainwater lencois maranhenses national park national parks parque nacional dos lencois maranhenses day outdoors aerial aerials high angle view landscapes scenics sand dunes water pools ponds south america shapes abstracts horizontal