By on April 21, 2010 9:22 AM
John Muir is one of California's most celebrated outdoor enthusiasts and environmental activists, and his 170th birthday (April 21) falls appropriately in line with Earth Day (April 22). Celebrate by heading out to his namesake park in Marin. Muir Woods is home to some of the most beautiful old-growth coastal redwood groves in the state, and a popular destination for locals and tourists. But take its path less traveled and enjoy the area's natural treasures without the crowds. Bootjack Trail is a backdoor route that starts from the Pantoll parking lot and lets hikers warm up with ease.