More than 25 tonnes of rubbish have been removed from one mile of railway line in Banbury.
The waste was found as part of a crackdown on fly-tipping hotspots by Network Rail.
Rubbish included shopping trolleys, bicycles, televisions and large amounts of scrap metal.
Network Rail said railway lines were often prime targets for fly-tipping, but offenders can be fined up to £1,000.
Chris Rowley, Network Rail's area general manager, said: "Fly-tipping is not only illegal, it blights the green corridor alongside rail lines and threatens the safe running of the railway.
"Our team has cleaned up a mile of track which has long been targeted by mindless fly-tippers.
"The difference is fantastic and will make a positive difference for local residents and people using the railway."