Hira is a cave about 3.2 km from Mecca, on the mountain called Jabal al-Sur, in the Hejaz region of present-day Saudi Arabia. The cave is about 3.7 m long and 1.60 m wide.
It is notable for being the place where Muslims believe that Muhammad received his first revelations from God (Allah) through the Angel Jibreel, also traditionally known as the angel Gabriel by the Christians.
There are 600 steps to reach the cave which is at a height of 270 m and has a radius of 263.23 m, during the Hajj around 5,000 Muslims climb into the cave. They will daily see the place where according to their beliefs Muhammad received the first revelation of the Koran on the Night of Power.