The visitor center and a wastewater treatment plant were among the 50 to 80 structures lost, the park superintendent said. The area was evacuated Thursday.

It was not long before the small plumes transformed into huge flames. Mr Crockett, vice-president of the non-profit Grand Canyon Historical Society, went to bed but worries kept him up. The historic Grand Canyon Lodge, with its panoramic views of one of the natural wonders of the world, was in the path of those flames.