beer drink drops surface sweat sweaty water wet arid Australia blue clouds country diminishing distance distant environment environmental erosion freshwater ground ground-water lake lake-side land landscape limited natural-environment natural-landscape outback patterns receding rural sand shrinking sky Soil surfaces texture textured textures trees vegetation water-resources wetland reflections abstract background fresh illustration reflection ripple sea summer concept drop fast park stream time flow fountain ridges pool shine waves river shadows afloat floating green leaves lilly pad peaceful still tranquil water lillies