The first streetcar through the tunnel was a landmark event in the decentralization of the City of San Francisco, spurring development and making the city what it is today. The process of getting there, however, was far from easy. More on the anniversary and the construction in an <a href="http://outsidelands.org/twin-peaks-tunnel.php" target="blank">article on OutsideLands.org</a> and on the <a href="http://outsidelands.org/podcast/WNP262_Twin_Peaks_Tunnel" target="blank">Outside Lands San Francisco podcast.</a>