Who is Intresto?
Intresto is a small R&D company based in Sydney.

Intresto's research is aimed at improving our ability to use the world's largest resource of low-embodied energy building material, rock rubble.

A new technology, RockSolver, is being developed;      rocks are scanned then a computer builds a virtual structure before outtputing instructions to the builder as to the position and orientation of each rock.
Why rock rubble?

Choosing to build with durable, locally sourced low embodied energy material, such as rock rubble, can significantly reduce greenhouse gas emissions.