Nancy Holt’s Sun Tunnels places four enormous concrete cylinders in Utah’s Great Basin Desert. The work turns sunlight, landscape and the movement of the earth into part of its structure. I like that the tunnels are massive yet their real material may be something untouchable: where light lands at a particular moment. Architecture usually gives us shelter from nature. Here it is built to notice nature more precisely.
https://www.diaart.org/media/_file/brochures/holt-tri-fold-brochure-for-website.pdf