Since the GeoStone module does not use pens or a lip, how does it get its connection strength?
The GeoStone module has a large open core (1/2 sq. ft in the Standard and 1/4 sq. ft in the Landscape block). This core is filled with #67 rock (1″ top size) creating what we call Rock Interlock. This form of connection has been tested in labs as well as real world situations and time and again proves to be one of the most powerful forms of connection available.
