A tunnel with 8.8 km (5.5 mi) length is built at 3,100 metres (10,171 ft) elevation and will be opened in 2019. Travelling on the Leh-Manali Highway will then be possible all the year. Now it takes 4 to 6 hours to cross Rohtang pass. It will then take about half an hour to travel through the Rohtang tunnel.