The Cave of Hira is famous for being the location where the Prophet Muhammad (PBUH) received his first revelation and where the Quran was first revealed. The Cave is about 12 ft in length and 5.5 ft wide, located 2 miles from Makkah on the Jabal al-Nour mountain.
Mount Thawr or Jabal Thawr is the mountain with the cave where Prophet Muhammad (PBUH) and His companion Abu Bakr (RA) found refuge from the tribe of Quraysh for a few days, when they emigrated to Madinah from Makkah. After three days, when Quraysh abated their search, Prophet Muhammad (PBUH) and Abu Bakr left the cave and headed towards Yathrib (Madinah).