People responsible for creating a number of fly-tipping hotspots on Dartmoor in Devon, are being targeted by park rangers.
Some of the rubbish is thought to be trade waste
Dartmoor National Park Authority said several areas had suffered recently and it was working with police, councils and the Environment Agency to stop it.
Rangers said some of the rubbish was being dumped by householders.
But they added they were examining the possibility some of the rubbish was trade waste.
Head ranger Rob Steemson said those involved with the moor's upkeep were ready to get tough, but added the authorities needed some help.
He said: "What we need to do is to have a lot more people being vigilant, perhaps taking registration numbers of any vehicles involved.
"We also want try and have a better rapport and reporting procedure, linking in with the police to get some high profile prosecutions."
The park authority said everyone needed to get involved to help safeguard the moor's special qualities for present and future generations.