The collapsed Silkyara tunnel, in which 40 labourers are trapped since Sunday, is a part of the Chardham project and it aims to connect Gangotri and Yamunotri. The tunnel collapsed on Sunday. At the site of the collapse tunnel, the progress in the rescue operation is regularly monitored by the top officials associated with NHIDCL, experts from BRO, NHAI, RVNL, RITES, Indian Railways, IRKON and other prominent institutions.