EXPLAINED
The story so far: Disaster struck Dima Hasao, central Assam’s hill district, in mid-May after incessant heavy rainfall. The 170 km railway line connecting Lumding in the Brahmaputra Valley’s Hojai district and Badarpur in the Barak Valley’s Karimganj district was severely affected. The Assam government and Railway Ministry’s assessments said the district suffered a loss of more than ₹1,000 crore, but ecologists say the damage could be irreversibly higher.