Medain Saleh.
These people were called
Thamud.
They were an ancient arab race before advent of Prophet Mohammed.
Around 3000 years ago.
Sha'm(Shem) was a son of Prophet Nuh(Noah).Still now,the region of Syria is called Sha'm.He was assigned or allocated this area and Cannan,Jordan.
Sha'm 's son was
Iram
whose one of his sons was called Ad'.(Ads children were known as Ad. were supposed to be giants).
https://themuslimtimes.info/2011/12/11/the-thamud-petra-and-madain-salih/
The Thamud people made houses from the Mountains.
In short:
Prophet Salih told his people the Thamud to stop worshipping Idols.
They ignored him,except the poor and weak.
They gave him a challenge to produce a live she camel from rock!
That miracle was granted by Allah.
The Quran
And We refrain from sending the signs, only because the men of former generations treated them as false: We sent the she-camel to the Thamud to open their eyes, but they treated her wrongfully: We only send the Signs by way of terror (and warning from evil). (Surah Al-Isra’, 59)
It was later killed and thus the Thamud were destroyed.
Al Quran:
Then they ham-strung the she-camel, and insolently defied the order of their Lord, saying: "O Ṣâlih! bring about the threats, if thou art a prophet!" (77) So the earthquake (rajfa) took them unawares, and they lay prostrate in their homes in the morning! —