Connecting Marin County & the Bay Area

Many of us would love to see the reopening of the Alto Tunnel to provide people of all ages and abilities the freedom to choose a safe, car-free way to walk and bike between northern and southern Marin, making commuting and reaching more areas of Marin County easier and more enjoyable for everyone.

Sign Our Petition

Two supporters of the effort to reopen Alto Tunnel have challenged community supporters to match them up to $10,000 to help advance the idea to reopen the tunnel Your gift will directly support efforts to deliver our call to action to our elected officials and the general public.