Boating Dock at Low Tide
Yuccas grow and survive by extending their stems as much as 12 inches a year in order to keep
their leaves above the swelling dune.
In time, when the dune begins to move past the
yucca, and the sand recedes from beneath its top, its
root-stem and leaves are left increasingly higher above the
sand, like a boat dock when the tide goes out.
At length, it leans, and then begins to topple over.