Hegra, also known as Madain Saleh, is an ancient city located in the Al-Ula region of northwestern Saudi Arabia. It is one of the most important archaeological sites in the country and is recognized as a UNESCO World Heritage Site. The site consists of over 131 well-preserved monumental tombs and several other structures that were carved into rock cliffs.

The city of Hegra was established by the Nabataean civilization, an Arab people who traded with the civilizations of Greece and Rome. The city was a major stop on the ancient trade routes and was known for its rich cultural and religious heritage. The tombs in Hegra were carved into the cliffs as a form of protection from the harsh desert environment and were used for burials by the wealthy and influential members of Nabataean society.

One of the most impressive features of Hegra is the Great Temple, a large structure that was used for religious and cultural activities. The temple is surrounded by smaller structures and several monumental tombs, making it one of the largest and most complex structures in the city. The tombs in Hegra are also notable for their intricate carvings and decorations, which reflect the artistic and cultural achievements of the Nabataean civilization.