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What sort of life will this young pine tree have, growing up on the edge of a cliff? Will it be taken out by a sudden rockfall, or the extended draught? Or will it grow slowly, for many years, with its trunk and branches becoming twisted by the forces of wind and weather? pic.twitter.com/NsSyx27lQ9

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Grand Canyon NPS@GrandCanyonNPS

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This water-thrifty pinyon "bonsai" tree has survived years of winds, scarcity of topsoil and water. 5 ft (1.5 m) tall and over 100 years old. pic.twitter.com/7pmURlg7Rx

Grand Canyon NPS@GrandCanyonNPS

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