Christchurch Area in New Zealand constructed with SRTM2STL using SRTM data in the Space Shuttle. The source code for creating these files can be obtained up on github under the GNU license. Proceed to github and search for SRTM2STL.
You might choose to print this to be relatively small. I get warping using PLA and it becomes bad when I try to print Raised Relief Maps which are big. I have had 'some' success with big maps. If you have a means to control warping you may also have better luck with big maps.