Research online and you'll find substantial documentation that the Biblical cities of Sodom and four other cities which God destroyed by fire and brimstone (sulphur) have been discovered. You can see where the cities once stood. The soil has been tested by a laboratory in New Zealand, found to be 95-98% pure sulphur. Ordinarily sulphur is only found in nature at 30-40% purity. Only extreme temperatures of 5,000-6,000 degrees Fahrenheit can purify sulphur. This is solid evidence that the Bible is true.