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 backdrop background desktop geology grate heavy massive metal old pattern patterns regular rocks solid stones structure texture textures wallpaper abstract brown decoration decorative organic dark gray paint winter gable rock stone wall closeup color colored colors colour coloured colours green irregular marble pastel shape structure rock blue sky electricity Electricity tower metallic structure power lines sky tower diagonal floor ground pavement walk beams black dynamic Fractal fractals graphic graphics ray rays star sun suns symbol white
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