LUXOR, Egypt (AP) — The terror lasted less than two minutes: Smoke poured from a hot air balloon carrying sightseers on a sunrise flight over the ancient city of Luxor, it burst in a flash of flame and then plummeted about 1,000 feet to earth. A farmer watched helplessly as tourists trying to escape the blazing gondola leaped to their deaths.

Nineteen people were killed Tuesday in what appeared to be the deadliest hot air ballooning accident on record. A British tourist and the Egyptian pilot, who was badly burned, were the sole survivors.

The tragedy raised worries of another blow to the nation's vital tourism industry, decimated by two years of unrest since the 2011 revolution that toppled autocrat Hosni Mubarak. The southern city of Luxor has been hit hard, with vacant hotel rooms and empty cruise ships.