grand canyon - dark clouds emerging to rain storm seen from the bright angel point at south rim, arizona, usa

thunderstorm sky raining cloudburst storm monsoon clouds cloudy grand canyon overcast dark rain bright angel trail hiking viewpoint geology panorama river shadow arizona usa battleship freedom colorado united states national park plateau viewing point trailhead south rim nature adventure hike outdoors mountain outdoor wanderlust view travel destination southwest cliff landscape deva temple brahma zoroaster transept