Rain has been sparse so far this winter but at least there has been enough of it to fill Cataract Falls in Mill Valley, one of our area’s splashiest thrills. There’s a Waterfall Hike (4.3 miles) into it this Saturday from 9:30am to 2:30pm. It’s one of the greenest, most verdant parts of lush Mill Valley and I can’t imagine how they are going to limit the event to just 20 people. Good luck.