Their background has been mentioned in Holly Quran, these people were so powerful and their heights were 70 times greater than today’s man height. These people were destroyed by Allah due to disobedience

 Hazrat Hood A.S was sent on their nation to give the teachings of one Allah.
Qom-e-Samood: Hazrat Suwaleh A.S (Brother of Hazrat Hood A.S) was sent to the people of Qom-e-Samood which were destroyed due to a big noise.