Scottish Water has dug a three-mile tunnel under Glasgow intended to prevent flooding.

The 1000-tonne drilling machine used to create the underground shaft finally broke through this week after 15 months at work underground.

The Shieldhall Tunnel is five times longer than the Clyde Tunnel and will help stop floods in Mount Florida, Toryglen and Giffnock.

It will do this by storing up to 90,000 cubic metres of storm water during periods of heavy rain and releasing it later on.

Tunnel boring machine Daisy the Driller, which was named by a local school pupil, is almost 600ft long. She cost about £10m and tunnels at a rate of just over a metre an hour.

The Shieldhall Tunnel took 1.5 million hours of work to build and more than 500,000 tonnes of earth, stone and clay was excavated in the process.

It is part of a five-year, £250m programme of work by Scottish Water started in 2013 to improve infrastructure in the Greater Glasgow area.