Michigan artist David Barr (1940-2015) created the 'Four Corners Project' [1] exhibited at the Smithsonian, where he inscribed a regular tetrahedron into a tran

Michigan artist David Barr (1940-2015) created the 'Four Corners Project' [1] exhibited at the Smithsonian, where he inscribed a regular tetrahedron into a transparent globe. In choosing his points, he used his personal criteria: 1: Each of the 4 areas needed to be untouched by western technology 2: One of the points had to be on Easter Island 3: Each of the 4 positions needed to be on land His effort was written about in a 1982 issue of InfoWorld magazine [2], and the mathematical background is fascinatingly detailed in the paper 'Mathematical Geography and Global Art: The Mathematics of David Barr's "Four Corners Project"' by Sandra L. Arlinghaus and John D. Nystuen [3]. On a different website, Sandra Arlinghaus further details [4] David Barr and John D. Nystuen's math and even includes a link to a still-working .kml generator for Google Earth [5] that can be used to help with this task. [1] http://boingboing.net/2016/03/29/the-amazing-4-corners-project.html http://boingboing.net/2016/03/29/the-amazing-4-corners-proje... [2] https://books.google.com/books?id=DjAEAAAAMBAJ&pg=PA12&lpg=PA12 https://books.google.com/books?id=DjAEAAAAMBAJ&pg=PA12&lpg=P... [3] http://www-personal.umich.edu/~copyrght/image/monog01/fulltext.pdf http://www-personal.umich.edu/~copyrght/image/monog01/fullte... [4] http://www.mylovedone.com/IMaGe/Monograph1/PlatonicSolids.html http://www.mylovedone.com/IMaGe/Monograph1/PlatonicSolids.ht... [5] http://montalk.net/coordinates.htm http://montalk.net/coordinates.htm