Tribune India writes 'The work on the NHPC’s Parbati-II hydel project at Shilagarh in Kullu district was stopped yesterday after the sudden ingress of slush into its under-construction tunnel'.

The cause and other details in Tribune report:

https://www.tribuneindia.com/news/himachal/work-on-kullu-nhpc-tunnel-halts-after-slush-ingress-386963