Bay seniors who have scaled back their Himalayan hiking ambitions will find that there still plenty of paths not taken in “ The Creaky Knees Guide to North California” by Anne Marie Brown. She details 80 easy walks with maps and directions, hiking times, etc . It has been available at Costco for $12. Anyone interested in traversing Mt. Tam will find the best maps not online, but at the ranger station at Pan Toll. As long as you’re up there the Geezer highly recommends the Cataract Trail, a lush 2 hour loop in the vicinity of Mountain Theater.