THE MOUNTAIN BICYCLE - You Have The Courage To Blaze New Trails. BATCH #707 What’s Behind the Batch? "The call of the wild—Area code 707—Marin County, California, Mt. Tamalpais. This is the mountain where modern MTB started. Throw a leg over a Batch Mountain Bicycle and feel the rush of the terrain that The Larkspur Canyon Gang first rode their 1930’s vintage single-speed balloon tire bikes on in the late 60’s. It’s pretty much a mandatory bucket list item." Our popular Mountain Bike is rendered here in a smaller size to fit the budding bikers in your life. The key features of a mountain bike, including rugged reliability and easy controls, will quickly turn your kiddo into an adventure-seeking pedaler.