Wooden bridge over river in Muir Woods National Monument with ancient redwoods

redwoods muir woods national monument california wooden bridge river ancient pacific coast redwood creek nature preserve lush timber coastal redwood national park service forested park redwood trees golden gate national recreation area mill valley john muir mount tamalpais oldgrowth forest sequoia sempervirens forested marin county park nature outdoors fresh air us usa united states ecology woods forestry wilderness scenic national park environmental picturesque serenity green evergreen verdant greenery environment tranquil oldgrowth redwood