What is dark forest?

Famous quotes containing the words dark and/or forest:

    On Linden, when the sun was low,
    All bloodless lay the untrodden snow,
    And dark as winter was the flow
    Of Iser, rolling rapidly.
    Thomas Campbell (1774–1844)

    Nature has from the first expanded the minute blossoms of the forest only toward the heavens, above men’s heads and unobserved by them. We see only the flowers that are under our feet in the meadows.
    Henry David Thoreau (1817–1862)