The current automobile entrance to Muir Woods was established in 1918. If Muir Woods was established as a National Monument in 1908, how did most visitors enter the park during the first decade? Track history with docent Evelyn Rose and embark on a moderate round trip hike that will trace the lower reaches of the Mount Tamalpais and Muir Woods Railway. Passengers either arrived by train or on the thrilling Gravity Car that glided passengers effortlessly down the mountain, a ride considered by many not to be for the faint of heart. Hike Begins at the Muir Woods Visitor Center. Group limited to 15. Reservations required; phone 388-2596.