Brent Stephenson / Columnar basalt formations at the 180 metre high Edinburgh Hill. Zodiac full of cruise ship tourists for scale. South Shetland Islands, Antarctica, December.
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Brent Stephenson / Columnar basalt formations at the 180 metre high Edinburgh Hill. Zodiac full of cruise ship tourists for scale. South Shetland Islands, Antarctica, December.
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Fred Bavendam / Several species of Basslets (Pseudanthias sp) swarming above a Columnar Leaf Coral (Pavona clavus), Milne Bay, Papua New Guinea
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Bernard Castelein / Alder buckthorn (Frangula alnus) tree at dawn. Klein Schietveld, Brasschaat, Belgium. April.
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Bernard Castelein / Alder buckthorn (Frangula alnus) in grassland at sunrise. Klein Schietveld, Brasschaat, Belgium. August 2019.
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Ashley Cooper / Clear water from Dettifoss waterfall mixing with glacial meltwater of River Jokulsa a Fjollum from the Vatnajokull ice sheet. Iceland, September 2010
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Kim Taylor / Brimstone butterfly (Gonepteryx rhamni) eggs on Alder Buckthorn (Frangula alnus) leaf. Surrey, England, UK, May. Digitally enhanced.
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John Cancalosi / Stromatolite (columnar) fossil, also called microbial carbonates, Torgo River Basin,Yakutia, Saha Republic, Russia, Precambrian.
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Colin Monteath/ Hedgehog House / Columnar jointed basalt rock cliff at sunrise, Blackhead Beach, Otago Peninsula, New Zealand
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Franco Banfi / Waterfall over columnar basalt rock, Calcada do Gigante, Santa Maria Island, Azores, Portugal, Atlantic Ocean.
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Brent Stephenson / Litlanesfoss falling through spectacular columnar basalt, just down stream of Hengifoss, which can be seen in the distance. Hengifoss, East Iceland, Iceland. August.
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Brent Stephenson / View looking out past columnar basalt from inside Fingal's Cave. Staffa, Inner Hebrides, Scotland. July.
