From The Long Now Blog:
BB reader Kerray says, “The people who worked on it are themacula.com, duber.cz and michalkotek.com, and the projection itself was done by avmedia.cz. Four months of work, 5000×1200 resolution, 2x Christie 18K HD projectors.” .
Fantastic! This is a must see. There are all kinds of symbolic visuals on the passage of time.