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Czechia

22 items

Video of a thin-section micrograph showing a coated grain: concentric bands of yellow, green and blue around a teardrop-shaped core of blue and grey crystals. — Karlsbader Sprudelstein Bernardo Cesare

Sunset over a river with long diagonal aircraft contrails across a golden sky, an arched footbridge, factory chimneys and dark trees reflected in the water. — Sunset and clouds in Prague Liliana Macotela

Many white swans on a riverbank and swimming at dusk, with a stone arched bridge, lit tourist boats and grand illuminated buildings reflected in gold on the dark water behind. — This is Nature and Man Carolina Reyes

Brown garage painted dark blue up to two wavy water lines, with white fish and the dates 21.12.1993 and 12.8.2002 marking the two water levels. — Flood marks on a garage in Sušice Luděk Vecsey

Close-up of a dark wet wooden beam with rows of white fluffy fungus tufts, many hanging clear water droplets beneath them. — Slow death of mine timber Lukáš Falteisek

Close-up of a corroded surface coated with secondary minerals: a fan of fine copper-coloured needles beside crusts of turquoise, blue, orange and yellow, glistening with water drops. — Hidden supergenic garden Lukáš Falteisek

Panorama from a grassy hilltop over a plain dotted with steep cone-shaped hills, with sunbeams breaking through a heavy grey cloud cover onto the fields. — Raná in the volcanic České středohoří Mts Luděk Vecsey

Eroded slope of loose sediment in diagonal bands of white, cream, yellow, orange, red and brown, with a few small green plants growing on it. — Coloured sediments of Rudice beds Luděk Vecsey

Silhouette of a tall television tower with round pods against an orange sky, beside a large, flattened, oval-looking sun rising just above a low band of cloud over a dark skyline. — Babies exploring the Sun Luděk Vecsey

Person writing on a clipboard in a misty beech forest, standing on a thick layer of brown fallen leaves beside two black buckets, plastic bags and a sample hole. — Soil sampling in Outer Western Carpathians Olga Vindušková

Thin-section micrograph of pisoids: closely packed round grains with concentric rings in copper, gold, blue and purple, some with dark crosses, set in grey fibrous cement with black open pores. — Thin section photograph of Karlsbad Pisoid Axel Munnecke

Golden sand wall carved into vertical ribs and grooves, against a deep blue sky, the picture apparently turned on its side. — Sand deposite Libor Elleder

Wide calm river at dusk with mossy boulders and flat rocks breaking the shallow water in the foreground, lined by dense green trees on both banks. — The Jizera River Libor Elleder

Person in an orange jacket and backpack standing on a boulder photographing a small cascading stream among large grey granite slabs with deep cracks, the ground covered in brown autumn leaves. — Colourful autumn Iva Hunova

Large sandstone boulder carved with years and initials, including 1616, 1868, 1921 and MAX, with a person's bare feet standing on it and another person's legs resting at the edge. — The Hungerstone Libor Elleder

Large white and grey cumulus clouds floating in a deep blue sky above a flat brown stubble field. — Under the open sky Iva Hunova

Cliff of tall grey basalt columns, many hexagonal, standing side by side, with broken column ends forming steps in the foreground and a misty green meadow and pond to one side. — Panská skála Peter Huber

Black-and-white electron micrograph of a lime mortar surface covered in densely packed spiky and blade-shaped crystals with a few larger blocky crystals, with a 2 micrometre scale bar. — Lime mortar Ioana Popister

Black-and-white electron micrograph of a limestone surface with two rounded fossil shapes surrounded by clusters of small blocky calcite crystals, with a 200 micrometre scale bar. — Fossils surrounded by calcite crystals Ioana Popister

Black-and-white electron micrograph of calcium carbonate crystals growing in dense spiky clusters with rounded tips, like tiny rosettes, with a 2 micrometre scale bar. — Calcium Carbonate Crystals Ioana Popister

Pyranometer with a double clear glass dome on a white disc-shaped housing, mounted on a metal platform, with spruce trees reflected in the dome and forested hills behind. — Greenhouse effect Marian Pavelka

Single slender tree, faint and grey, standing on flat ground in dense fog that hides everything else. — Tree in fog Radovan Tyl

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