http://forum.skyscraperpage.com/showthread.php?t=200709
https://en.wikipedia.org/wiki/Dunsmuir_Tunnel
http://www.miss604.com/2010/07/tunnels-under-downtown-vancouver-history-readers-choice.html
http://www.huffingtonpost.ca/2015/03/05/vancouver-tunnels_n_6811500.html
http://i.imgur.com/YARTrxr.jpg-
https://www.reddit.com/r/vancouver/comments/1fk2mq-
https://www.geocaching.com/seek/cache_details.aspx?wp=GC1R307&title=thornton-tunnel&guid=a118c7cc-2497-4e98-996f-3b16e9208c00-
https://www.google.com/maps/place/Bates+Park/@49.2796785,-123.0192908,1061m/data=!3m1!1e3!4m2!3m1!1s0x548670ea6e4154b7:0x165bc59f60fac0e8?hl=en-
https://www.google.ca/maps/dir/49.26446,-123.007227/49.264305,-123.007296/@49.264324,-123.0062142,996m/data=!3m1!1e3!4m5!4m4!1m1!4e1!1m1!4e1?hl=en
https://www.google.ca/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=underground%20tunnels%20vancouver%20bc
