The Atal Tunnel, also known as the Rohtang Tunnel, is the longest tunnel in India, with a length of 9.02 kilometers.

The Banihal Tunnel is located in the state of Jammu and Kashmir and connects the Kashmir Valley with the rest of India.

The Atal Tunnel is also known as the world's highest tunnel, with an elevation of 3,060 meters (10,040 feet) above sea level.

The Atal Tunnel is located in the state of Himachal Pradesh and connects the Kullu Valley with the Lahaul and Spiti Valley.

The Gotthard Base Tunnel is the longest tunnel in the world, with a length of 57.1 kilometers (35.5 miles).

The Jawahar Tunnel is located in the state of Uttarakhand and connects the Rishikesh-Badrinath highway with the Gangotri-Yamunotri highway.

The Seikan Tunnel is the longest tunnel in Japan, with a length of 53.85 kilometers (33.46 miles).

The Chenani-Nashri Tunnel is located in the state of Jammu and Kashmir and connects the Chenani town with the Nashri town.

The Gotthard Base Tunnel is the longest tunnel in Europe, with a length of 57.1 kilometers (35.5 miles).

The Jawahar Tunnel is located in the state of Himachal Pradesh and connects the Kullu Valley with the Lahaul and Spiti Valley.

The Channel Tunnel, also known as the Chunnel, is the longest tunnel in the United Kingdom, with a length of 50.5 kilometers (31.4 miles).

The Atal Tunnel is located in the state of Uttarakhand and connects the Rishikesh-Badrinath highway with the Gangotri-Yamunotri highway.

The Chunnel, also known as the Channel Tunnel, is the longest tunnel in the United States, with a length of 50.5 kilometers (31.4 miles).

The Banihal Tunnel is located in the state of Jammu and Kashmir and connects the Kashmir Valley with the rest of India.

The Gotthard Base Tunnel is the longest tunnel in the world, with a length of 57.1 kilometers (35.5 miles).