Uttarakhand avalanche | Drilling operation launched at Tapovan tunnel to rescue trapped workers https://ift.tt/eA8V8J

The focal point of the rescue operation for the last over four days remains the more-than-1.5-km-long "head-race tunnel" of the total 2.5 km of the tubular structure

from The Hindu - National https://ift.tt/2Zcb029