Like other narrow canyon, Antelope Canyon is composed of soft sandstone. After millions of years, it is formed by various kinds of erosion. Among them, the erosion of flash flood is one of the main reasons for the formation of Antelope Canyon, and other main reasons are wind erosion.<br>Today, Antelope Canyon is the main source of tourism revenue in the Navajo Aboriginal reserve. Apart from tourists, visitors also have photographers from all over the world. It is very difficult to take good photos in this canyon. Because the light only enters from the upper edge of the canyon and the surface of the valley wall is uneven, many reflections are caused, which makes photogrammetry very difficult.<br>
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