Re:Minefold (YC W12) Launches Affordable, On-Demand Platform...
by Pyrodogg on Monday March 12, 2012 @05:12PM
(#3695578)
They're using Minecraft Overviewer[1] to generate the maps. Overviewer uses the Google Maps api to serve the map tiles. It translates the minecraft block coordinates into lat/long coords. It's probably this translation that leads you to 'this location on Google Maps.'
[1] https://minefold.com/chrislloyd/minebnb