Efforts to rescue 40 workers trapped inside a collapsed tunnel in northern India have been expanded to include drilling down from the mountain top.
A platform is being prepared to place the drilling machine at the site in the Himalayan state of Uttarakhand.
Another bid to reach the workers will also be made from the mouth of the tunnel. Three attempts to drill through the debris there have failed so far.
Part of the tunnel under construction caved in after a landslide last Sunday.
Contact with the men has been established and they are being provided oxygen and food.
Explaining the latest rescue attempt on Saturday, Uttarkashi's District Forest Officer DP Baluni said: "A spot right above the tunnel has been identified and marked. A hole will be drilled from there."
A digger has been brought to build a flat surface for the drilling machinery.
The commander leading federal rescue teams, Maj Naman Narula, said he hoped to have the platform built by Sunday. The depth of the hole is expected to be between 300 and 350 feet (90-105m), he added.
Officials say that if everything goes to plan, the rescue could another take four or five days.
Also on Saturday. there was an angry confrontation between rescue officials and colleagues and friends of the trapped workers.
Tensions ran high as officials were challenged about the lack of progress. One man cried out: "It's been seven days and my brother is trapped in there."
Rescuers responded by saying they were spending sleepless nights to reach the workers. One official said the boys in the tunnel were like his own children: "I go to my bunk at night and cry as well. I can't cry in front of you otherwise you will lose hope."
The Silkyara tunnel in Uttarkashi district is part of the federal government's ambitious highway project to improve links with famous pilgrimage spots in Uttarakhand.
The mountainous state, where several Himalayan peaks and glaciers are located, is home to some of the holiest sites for Hindus.
A nearby landslide caused heavy debris to fall on the tunnel, leading to the collapse of a section about 200m from the entrance.
A water pipeline set up for construction work is now being used to supply oxygen, food and water to those still inside.
How India tourist spot became a bridge of death
At least 26 dead in India railway bridge collapse
Premature babies evacuated from Gaza hospital
Israel hopeful of hostage deal in 'coming days'
Australia stun India to win sixth World Cup
The Russians snitching on colleagues and strangers
Poland truck protests leave Ukrainian drivers stranded
The man who reached the deepest place on Earth
Napoleon's Ridley Scott on critics and cinema 'bum ache'
Watching the Royals: a history of the monarchy on screen
India seek immortality in World Cup final against Australia
The extraordinary firing of an AI superstar
Napoleon: The truth about 'small man syndrome' Video
Treason and bribery – a history of House expulsions
The raunchy books Britain loves
How humans could travel through time
The fried chicken served on Titanic
© 2023 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.