Why did chris booth study every stone used in echo van de veluwe?

Chris Booth studied every stone used in "Echo van de Veluwe" to understand the geological and historical context of the materials, as well as their aesthetic and structural properties. This detailed examination allowed him to explore the relationship between the natural environment and human creativity, highlighting the significance of local resources in art. Additionally, it provided insights into the cultural heritage of the Veluwe region, emphasizing the interplay between nature and artistic expression.