On a good day for storm shooting in the big chasm, and before an even better (albeit short) evening, this late-day thunderstorm dumped copious rainfall and produced mostly loud but invisible bolts inside its dense core. This flash near the south rim (of core and canyon!) was a welcomed exception, except for the fact that the core was almost upon me, and I had to shut down shooting and move to a different vantage after this.
8 E Tusayan AZ (14 Jul 21) Looking WNW
35.9979, -111.9882