flower flowers green marigolds marsh nature plant plants spring water yellow boat boats boy delta friendship girl parking talk floating leaves peaceful reflexion surfave water lilies wet white zen advice alert appropriate-behavior appropriate-behaviour behave behavior behaviour black communicate communication directions inform information informing message not-allowed not-permitted permission-denied prohibited prohibition red restricted restriction restrictions sign signage warning accretions bio-chemical-accretionary-structures cementation columnar cumulative-structures excretions formations formed forming fossils high-saline-levels lake layered living-fossils living-rocks microbialites microorganisms natural park rock-structure sedimentary-grains shallow-water shaped shapes slow-growth stromatolite stromatoliths structures atmospheric autumn beach berlin card cold distance fantasy fog foggy germany grief grieving grunewald Kiesgrube lakeside landscape loneliness magic magical melancholy meteorology mist misty moody Morning mysterious mystic october outlook perspective rural scene sadness scenics silhouette sky solitude Tranquil Scene tree trees weather awareness birds care communicating concern danger denied please polite prohibitions protecting protection public-park warning-sign water-birds water-fowl weathered weathering wildlife canoe golden quiet serene sunrise duck glow bird glide swan waterfoul