There is Iceland, the country, with cars and roads. To get around in that place, you’ll need a car.
But to get around in Iceland itself, the place where you meet the energy of the earth, right on the bottom of the sky?
Well, only your feet will take you there.
Bring boots.
Those other things tend to break down.
A Farm in Iceland 
https://certainmeasureofperfection.wordpress.com/3775-2/
Indeed!
LOL
a scene from Cold Fever – the border between the material world and the supernatural world
I found the border completely porous in a few places, which was quite unsettling.