Inside the pyramid of Cheops or Khufu

Inside the pyramid of Cheops or Khufu. All underground rooms and chambers and tunnels. It is believed that alMamun was the first to sink into the pyramid after it was sealed around 2566 BC. Caliph alMamun (786833) became the first person to enter the Great Pyramid 3400 years after it was sealed. One of the curious initiatives of alMamun is the penetration into the pyramid of Cheops in 831. It is believed that he was looking for treasures at the same time. But given his biography, it can be assumed that he was guided by an exploratory spirit, and he was just curious about what was inside. The location of the real entrance had long been forgotten by that time, so the caliph chose the place that seemed most likely and ordered to break the passage. According to the Arab chronicler Abd alLatif (about 1220) and the famous traveler Ibn Battuta (about 1360), this was done with the help of fire and pointed iron stakes first the stones were heated, then cooled with vinegar and when cracks appeared in th