Board Thread:Tapped Out Help/@comment-173.240.24.197-20160825085633

I see some people's towns that I've visited have a 2nd Monorail Tunnel. Do you get the 2nd Monorail Tunnel (that goes through the mountains) the same way you get extra track pieces, etc? Or do you have to purchase it as a special item (perhaps limited time frame) or something like that? I'm just hoping I didn't miss it. Thanks. . 