Pretty Cool little discovery article. Stick with the read into the arch projects with visual accompaniments. Love this kind of artistic expression.

Turrell erases the gradation near the horizon; stating that “…if you go to the Rocky Mountains, to a high altitude where it is cold, you see sky that is such a crisp blue you feel that you could cut it and put it in cubes! That is the kind of sky I want, and I have been able to get it by selecting the altitude. There are gradations near the horizon where the blue is lighter, and then gradually, toward the zenith, it gets deep. With Roden Crater I have taken out the first fifteen degrees of height by aiming the tunnel sight lines above that level. At that point you see thirty degrees less than one hundred eighty degrees. That is how you get that incredible color – by eliminating all of the white at the horizon.”

P.s. Mr. Madrid’s “George Clooney” E.R. Doc with the bull-dog & Veggie Garden: Call Me, Maybe 🤔😉🎇