There's so much emptiness here!

Coming from a country that's just a little bigger than the state of Maryland, but with more than three times as many inhabitants, I am not used to seeing a lot of empty land. Wherever you are in my homecountry, you're usually just a short car (or bicycle!) ride away from the nearest supermarket. However, here in the States I am always astounded by the amount of emptiness, for example when we were driving through Wyoming on our way back from Yellowstone and Grand Teton.

 Look at that, there's just NOTHING there! It always gives me a bit of reverse claustrophobia. Is there a word for that?