The world’s highest railway bridge, an ambitious piece of engineering across a mountain valley in Kashmir, was opened Friday by Indian Prime Minister Narenda Modi, just weeks after a deadly tourist massacre in the Himalayan region sparked a brief conflict with neighboring Pakistan.

The bridge will connect the valley region of Indian-administered Kashmir with the rest of the country by train.

Officials say the train will help the troubled region, but many Kashmiris see it as a tool to entrench the Indian government’s control.