The dramatic stories of three pioneering “Keepers” and environmental activists—Ken Sleight, Katie Lee, and Mark Dubois and the damming of wild rivers in the west.

Ken Sleight is a long time river and pack guide and activist in southern Utah who fought the damming of Glen Canyon and filling of Lake Powell from 1956-1966. An inspiration for Edward Abbey’s, Monkey Wrench Gang, Sleight is currently working on the campaign to remove Glen Canyon Dam.

Katie Lee, born in 1917, a former Hollywood starlet, ran the Colorado River through Glen Canyon long before it was dammed, and in 1955 was the 175th person to run the Grand Canyon. An outspoken conservationist, singer and writer, she spent her life fighting for rivers.

Mark Dubois, co-founder of Friends of the River, Earth Day and International Rivers Network, began as a river guide who opened up rafting trips to disabled people in the 1970s. Dubois protested the damming and flooding of the Stanislaus River by hiding himself in the river canyon and chaining himself to a rock as the water rose in 1979.