Luminance

On the summer Solstice, the sun is directly overhead as it's intense light finds openings in the chasm. Swirling red sandstone becomes illuminated within it's water formed chambers. Giving way to fascination and wonderment for those who are fortunate enough to see it.
This normally dry canyon receives rain water from thirty miles upstream and drains a large area of barren land. Deadly flash floods can occur unexpectedly and with little warning. Powerful and chaotic floodwaters have played a major role in the formation of this awesome visual treasure.

Upper Antelope Canyon is located in northern Arizona just outside the city of Page.
This image is being entered in deranged photography contest themed "capturing light".