Subject: The US/Canada border
...in video, featuring ride alongs with law enforcement in Clinton County, NY:

https://www.youtube.com/watch?...

The US/Canda border in WA state looks exactly like this in Whatcom county (the county closest to Puget Sound) - a long flat road with a small ditch 4 feet or so wide separating the US and Canada. Lots of farmland.
Further inland is where the mountains start and the landscape is much different.