This week, I am visiting Lake Clifton, south of Perth and in the vicinity of Mandurah, reportedly the fasted growing city in Australia. Lake Clifton is also contains a roughly 6km long colony of thromobilites, a form of microbialite or growing rock-formations. Microbialites are the oldest known fossils, dating back to 3.5 billion years or so. They are made by cyanobacteria, the ancient life form that generated the oxygen atmosphere upon which life as we know it today depends. The Lake Clifton thrombolites are not this old, but they are the only known living examples, although their current status (ie living/dead) is apparently a debated point.I am visiting the site as part of the research we are doing with SymbioticA, who are doing a large project exploring the thrombolites and other linked environmental issues of the area. We will be discussing approaches to siting a speculative architectural future in this region.