Following the opening of technical bids, six companies have submitted offers to build the 4.7 km tunnelling Package C-4 of the 121.7 km Haryana Orbital Rail Corridor (HORC) project. Twin tunnels in the Aravalis will make up this portion of Haryana’s first semi-high-speed rail line, which will run from chainage kilometre 24.880 to km 29.580 close to Sohna’s Roz-Ka-Meo Industrial Area. This is very close to a Western Dedicated Freight Corridor (WDFC) project tunnel that is now being built. The New Austrian Tunneling Technique (NATM) and the cut-and-cover technique will be used to build the roughly one kilometre long tunnel. The scope of the contract also covers the installation of ballastless track, the commissioning of electrical systems, and the building of small bridges.