A change of location, light and space can dramatically shift perception, and that is the concept behind artist James Turrell’s “sky spaces” constructed on Roden Crater, located on his ranch between Flagstaff and Williams.

Matthew Goodwin, philosophy lecturer, will discuss the Roden Crater project and introduce some of the philosophical issues confronted by the artist’s creation. Goodwin will present “A Philosophy of Light and Space: James Turrell and the Roden Crater Art Project” from 6 to 7:30 p.m. Wednesday, Aug. 7, at La Posada Hotel in Winslow, Ariz.

Turrell has spent more than 40 years working on the site, creating surroundings that invite visitors to explore light and space while highlighting the movement of stars, planets and galaxies. He currently has an exhibition at the Guggenheim in New York.

The presentation is part of the Summer Seminar Series.