On the Wiki I found a link to an article stating that "Kansas is Flatter than a Pancake"
link. However, this article (which I believe is not meant to be very serious anyway) does not describe what kind of DEM data is used to create the profile map of Kansas. It is even possible it uses data from radar satellites orbiting earth (
link). In that case, the roundness of the earth is a precondition for the article.
If not, the profile data could be just measurements in the direction of gravity, and thus would be probably identical in the flat earth as well as the round earth scenario.
In any case, the article does not proof anything, neither in favor nor against, the flat earth theory, and should be removed from the Wiki.
However, I would like to open a serious discussion on this topic. Suggestions and thoughts are welcome!