Ludwig Übele writing for I Love Typography:
I had in mind this idea of a wide and flat landscape. This was the initial idea: Tundra should lead the eye effortlessly along the line, thus emphasizing the horizontal.
Nice-looking serif face that delivers on that initial vision.
Linked from: http://ilovetypography.com/2011/10/05/the-making-of-ff-tundra/
Engineering Director at Adobe, team builder, lifelong learner, author, and Jesus follower.