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Clouds envelope a mountainside of Aspen trees in their autumn splendor prior to an approaching snowstorm that will signal a transition of seasons, Colorado, USA. Note the contrast between deciduous and conifer or evergreen forest trees.
Don Grall/Visuals Unlimited, Inc.
all images © Visuals Unlimited
Visuals Unlimited, Inc. specializes in, microscopy, healthcare, medical, wildlife, underwater, agriculture, and science stock photography.