LOOKING SOUTH:
The 'Thread' is a dynamic structure, appearing to change shape with every
shift in perspective. Implicit in every vantage point is the perfect alignment
of the towers' shadow which can be perceived from directly overhead.
Topocentric positioning data for 9/11/2001 provided
by the Rose Center For Earth & Space, New York, USA
Surface projection calculated by Bentel & Bentel Architects, Locust
Valley, NY, USA