Explanation: The Atal Tunnel, named after the former Prime Minister of India, Atal Bihari Vajpayee, is a remarkable engineering achievement located in the state of Himachal Pradesh. This tunnel is the world's longest highway tunnel at 9.02 kilometers and is part of the Leh-Manali Highway, which connects the cities of Manali and Leh. The tunnel is situated at an elevation of 3,000 meters above sea level and is designed to provide year-round connectivity between these two important cities, bypassing the treacherous Rohtang Pass, which is often closed due to heavy snowfall during the winter months.
The construction of the Atal Tunnel began in 2008 and was completed in 2020. It is a significant infrastructure project that has greatly improved the connectivity and accessibility of the region. The tunnel is equipped with advanced safety features, including emergency exits, fire-fighting systems, and ventilation systems to ensure the safety of the travelers.
The tunnel is a part of the National Highway 5, which is a major highway connecting the northern parts of India. The construction of the tunnel has not only improved the transportation infrastructure but has also boosted the economic activities in the region, particularly in the tourism sector. The tunnel has reduced the travel time between Manali and Leh by several hours, making it easier for tourists and travelers to access these destinations.
It is important to note that the Atal Tunnel is not located in other states such as Sikkim, Uttarakhand, or Jammu and Kashmir, which are also known for their mountainous terrains and scenic beauty. The tunnel is a unique feature of Himachal Pradesh, highlighting the state's significant contribution to India's infrastructure development.
In summary, the Atal Tunnel is a critical infrastructure project located in Himachal Pradesh, providing year-round connectivity between Manali and Leh and significantly improving the transportation and economic landscape of the region.