https://en.wikipedia.org/wiki/Height_of_Land_Portage https://en.wikipedia.org/wiki/Height_of_Land_Portage Part of the less than 1 km land border between Ontari

https://en.wikipedia.org/wiki/Height_of_Land_Portage https://en.wikipedia.org/wiki/Height_of_Land_Portage Part of the less than 1 km land border between Ontario and the US, the other 2700km being water.