1. The Al-Hajar Mountains, located in Oman, are the highest mountain range in the eastern Arabian Peninsula. This impressive mountain range runs parallel to the northern coast of Oman, stretching over 700 kilometers. The mountains are known for their rugged and rocky terrain, with deep wadis (valleys) running through them, providing stunning natural landscapes.

2. There is no specific entrance or working times for the Al-Hajar Mountains as they are a natural attraction open to the public at all times. However, it is recommended to visit during daylight hours for safety reasons. For any specific inquiries or guided tours, it is advised to contact local tour operators or the Ministry of Tourism in Oman.

3. There is no ticket required to visit the Al-Hajar Mountains as they are a natural attraction. The transportation options to reach the mountains include renting a car or hiring a local guide. The nearest major city to the Al-Hajar Mountains is Nizwa, which is a good starting point for exploring the area. It is recommended to have a 4x4 vehicle as some parts of the mountain range may have rough terrain.