Giant suspension cables...?
In a sense yes... These are the bass strings of a #Steinway Spirio R Grand Piano.
They're wound so tight that they exert more than 20 tonnes of pressure on the frame.
Part of my Architecture In Music collection, exploring the insides of extraordinary instruments.
The inside of a modern subw... actually it's a #Steinway Grand Piano! Crafted from around 11'000 individual parts you're looking at a tiny tunnel through the 'action' of the piano (the moving parts that transfer motion from the keys to the strings).
This whole space is less than 20mm in diameter. To photograph it I took 1088 individual photos at different focal lengths and blended them, a technique called focus stacking.