The race is on to rescue construction workers who have been stuck since Sunday morning in India after a nearby landslide crushed a partially-built tunnel, trapping them inside. On the ground, they say they're waiting for more sophisticated machinery to be airlifted to this remote area, which is in the north of India. Our South Asia correspondent, Samira Hussein reports.

Inside this tunnel, behind a pile of rubble, are men waiting to be rescued. Trapped since Sunday after a neighboring landslide destroyed this partially-built tunnel. Let me know if you need anything, shouts this man into a pipe.

This.

Is how authorities speak with the workers and provide them with food and oxygen. Officials say they will drill a hole and insert a metal pipe that the men can use to crawl to safety. But machines on the ground are not powerful enough to dig through the debris. So rescue workers are waiting for more sophisticated tools to be flown in from Delhi. The longer they remain underground, the growing sense of urgency to get them out. Those that have gathered at the site are angry, demanding to know what is.

Taking so long. Those are.

Our brothers stuck in there, says this man. We will stay here until they.

Get out..

One of the men inside the tunnel, Rajandra Beria, he's the sole breadwinner for his family. His little sister is desperate for news.

We are praying to God that everyone gets out safely and that we should not be misled about what is happening on the ground.

Officials are hopeful the workers will soon be reunited with their families, but offered no time for when that might happen. Samira Hussein, BBC News, Delhi.