Here’s a lecture I put together entitled “Those Who Hold Up Broad Heaven: Pillars, Columns, and the Eliadean Axis Mundi in Homer’s Odyssey” which discusses the nature of ‘sacred space’ according to Mircea Eliade in the Homeric Greek epic.
Eliade, Mircea. Images and Symbols: Studies in Religious Symbolism. Princeton: Princeton University Press, 1991.
Eliade, Mircea. The Sacred and Profane: The Nature of Religion. New York: Harcourt, Brace & Company, 1959.
Evans, Arthur J. “Mycenaean Tree and Pillar Cult and Its Mediterranean Relations.” The Journal of Hellenic Studies 21, 1901: 99-204.
Korom, Frank J. “Of Navels and Mountains: A Further Inquiry into the History of an Idea.” Asian Folklore Studies 51, 1, 1992: 103-125.