The installation consists of 9 books made of local terracotta clay (unfired), each filled with 3 pieces of paper made from native grasses, and a square of copper leaf to catch the sun.
Anitya is the Sanskrit word for 'impermanence'. As all the materials are of the earth they will return to the earth over time with rain and snow. Because this is a desert environment the dissolution process will take time.
The July 20th post on this blog has a detailed image of one of the books.