There's almost as much going on under underneath London as on the surface.

Sewers, hidden rivers, 270 Tube stations, disused postal railways and Churchill's War Rooms all combine to create a 3D maze just out of sight. But somehow, the ambitious Crossrail transportation project, which is now 60% complete, has managed to carve huge tunnels through it all in an effort to connect more of London, and ease commuting pains.

See also: Beautiful photographs capture naked free runner across London

Twenty-three miles of train tunnels have been completed, thanks to some 10,000 workers, and the pictures emerging from down below make it look like a fictional hinterland.

Bond Street

The 260-metre-long tunnels under Bond Street in central London run parallel to Oxford Street. Around 220,000 passengers are expected to pass through Bond Street Underground and Crossrail station each day.

Liverpool Street

These machines are helping to create 1.5 kilometres of platform and pedestrian tunnels 40 metres below ground level, while traffic chaos continues overhead.

Whitechapel

This is one of eight 150-metre-long tunnelling machines used on Crossrail. Only two are still active, as most of the work has been completed.

Farringdon

These are platform tunnels under Farringdon to the east of central London. Farringdon is due to open in 2018, with 90,000 passengers set to pass through daily.

Tottenham Court Road

The Tottenham Court Road area was destroyed for Crossrail, with several landmarks and music venues torn down. Underneath, it all looks quite serene.

Paddington

The Crossrail station at Paddington is being constructed right next to Brunel's Grade I listed mainline station.