The canyon makes the final four and now, is the only remaining natural place left on the list.
We go to a BEST OF SEVEN series to find the winners from here on out. Repeat, it takes FOUR votes to win.
By flip of a credit card, the north-south semi final match will happen first. Ready ---
The Pyramids
vs
Stonehenge
http://cellar.org/fieldof64/64.php?field=landmarks