An image of Lake Mead's lower basin area looking toward Boulder Canyon. A portion of the airplane from which the image was taken can be seen on the right side of the photograph.

An image of Lake Mead's lower basin area looking toward Boulder Canyon. A portion of the airplane from which the image was taken can be seen in the bottom right corner of the photograph.

An image showing an aerial view of Black Canyon within its home of Lake Mead.

An image showing an aerial view of Quartermaster Canyon within its home of Lake Mead. The silhouette of a lone visitor can be seen standing atop a rocky hill near the center of the photograph. Transcribed onto the bottom border of the image: "38 2/3 (inches) x 44 (inches)."

An image of Iceberg Canyon within its home of Lake Mead.

An image of Iceberg Canyon within its home of Lake Mead. Note: The image itself is stained with brown splotches that are spewed across the face of the image.

An image of Iceberg Canyon within its home of Lake Mead. Note: The boat from which the image was taken can be seen in the bottom right corner of the photograph.