The world's longest tunnel is almost finished

Longest <i>railroad</i> tunnel. There exist longer tunnels that are also rather interesting reads:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;New_York_City_Water_Tunnel_No._3" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;New_York_City_Water_Tunnel_No....</a>

Linked article light on details. Far more info on Wikipedia: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Gotthard_Base_Tunnel" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Gotthard_Base_Tunnel</a><p>EDIT: My link was bad. Thanks, zawaideh