On Saturday, February 3, Twin Peaks Tunnel and the K Ingleside line will celebrate 100 years of Muni service. To kick-off the centennial festivities, we have partnered with the West Portal Branch Library to host a photo exhibit of the tunnel in its early years and show a century-old film documenting the tunnel’s construction and first day of service. The Market Street Railway will conduct a short, free walking tour spotlighting the tunnel's history. The tour will begin at the library at 3pm. SFMTA staff and volunteers will also be on hand, giving away handy K-Ingleside canvas tote bags, but don't wait too long! We will be handing out just 100 bags -- 100 bags for 100 years of service.