Since this region is composed of 30-60-90 triangles, there are three types of tiles. Each is formed by putting two triangles together by sides of the equal length. Since some of the vertices project twelve edges, dungeons converge much slower than most other regions. Like the fortress, the arctic boundary is unknown.

Note: by clicking the applet and scrolling the wheel on your mouse you can adjust the pace of randomization.

Note: clicking the mouse within the applet will pause or resume the randomization process.