More than 600kg of rubbish that had been rotting on a Cox Peninsula beach for decades was removed by a group of dedicated cleaner-upperers last week.
The haul included empty .303 shells and bottles from the World War II era at Mica Beach, Talc Head.
The area can only be reached by boat, about 15 minutes from Darwin.
Among the group with Conservation Volunteers Australia were locals, backpackers from overseas and a Palmerston High student giving up part of her holidays to do the job.
Talc Head facility caretaker Ian Webb said it was believed the area was used as an outpost for army camps during WWII.
"The amount of empty .303 shells we found - they had some good times," he said.
"And a lot of the bottles we found had dates on the base - 1945 or 1943."
Mr Webb said they were surprised at the amount of garbage they managed to remove over four days.
"There was a trailer load of old roof iron, half- 44-gallon drums rusted, barbecue plates that had rusted away."
He said the main aim was to clean up the dunes behind the beach - flatback turtles nest there - and the group had done a fantastic job.
Coastcare, NRETAS (the Environment Department) and Mangrove Route tours all pitched in too, he said.