The Roan Cliffs and East Tavaputs Plateau stand out through snow cover in the Desolation Canyon area along the Green River of Utah. The uplift of the Roan and Tavaputs area in the recent geologic past caused the river canyons to dig deeper.
The deeply etched patterns of intermittent streams in the Hadhramaut Plateau of South Yemen. These stream beds, which now rarely carry water, are deeply entrenched, owing to the geologically recent uplift of the plateau. Nonetheless, a very distinct watercourse appears along the top and bottom edges of the image. In the photograph's upper portion, available water will flow into the vast emptiness of the Rub al Khali (Empty Quarter). In the lower portion, water will flow to the Gulf of Aden.
The Horn of Africa juts northward separating the Gulf of Aden (left) from the Indian Ocean, right. Rass Xaafuun peninsula extends into the Indian Ocean on the east coast of Somalia. A band of cirrus clouds drifts across the Gulf of Aden towards South Yemen which is seen in the center left of this photo.
The line of light/dark, caused either by the sunrise or the sunset, is called the terminator. The edge of the Earth, or the horizon, is called the limb. In this photograph, limb and terminator blend near the top.