Photograph of Navajo Sandstone alcove with a hanging garden in Knowles Canyon, Glen Canyon National Recreation Area. Hanging gardens develop where groundwater seeps along an impermeable horizontal bed. Desert varnish above the hanging garden has stained some of the cliff a dark brown color. Cross-beds high on the cliff face tilt to the south-southeast, indicating paleowind direction in the Navajo erg. Glen Canyon National Recreation Area.
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