Peter Cairns / RF- Bluebells (Hyacinthoides non-scripta) flowering in beech wood. Perthshire, Scotland, UK. (This image may be licensed either as rights managed or royalty free.)
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Yva Momatiuk & John Eastcott / Freshly falling snow forms slush on undulating sea surface, South Georgia Island
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Yva Momatiuk & John Eastcott / Brain-shaped bulges dominate undulating slope of Navajo sandstone, on Colorado Plateau, Paria Wilderness Area, autumn evening, Arizona