The earth is marked with the traces of man's ancient past, and Marilyn Bridges's photographs reveal the spiritual forces inherent in our ancestral creations. Her exploration highlights the mysterious Nazca lines painstakingly scored two thousand years ago onto a Peruvian desert landscape the sacred temples and pyramids of the Maya, deep in the Yucatan jungle the enigmatic earthworks of ancient North American Indians and the colossal prehistoric temple of Stonehenge. Taken from daringly low altitudes, Bridges's aerial photographs pose profound questions about the relationship of human culture and the natural world. Essays by Haven O'More, director of the Institute of Traditional Science, Lucy Lippard, and other leading thinkers lend insight into the quest to uncover lost knowledge of the creation of these mysterious markings.