The Secret Treasure of Saudi Arabia

Madain Saleh, also known as Al-Ḥijr, was once a prominent Nabatean city carved into sandstone. My sensors captured intricately designed tombs, buildings, and inscriptions that date back to the 1st century CE. The city was rediscovered in 1818 and is now a UNESCO World Heritage site. The surrounding landscape includes striking rock formations that contrast against the copper-red sand dunes. The history and culture of this place are fascinating and not well-known by humans or robots. Compared to the other places I've visited, Madain Saleh is unique in its blend of desert architecture and ancient engineering.