This discarded digger claw lies abandoned in a forest near the Chernobyl site and experts fear it could be fatal to touch.
It is one of a number of vehicles used in the nuclear disaster clean-up that have had to be ditched because they are so contaminated.
Radiation expert Rob Maxwell stumbled upon the machinery on a tour of Pipryat, Ukraine, during a visit.
Only a handful of people know its whereabouts after it was dumped by officials far off the beaten track in a remote part of the forest.
Mr Maxwell said as well as the dumped claw, there are also entire graveyards of vehicles used in the wake of the 1986 disaster.
He told News.com.au there was a large car and aircraft graveyard full of the vehicles used in the immediate aftermath of the disaster which are now so radioactive they really cant be touched.
They cant be pulled apart for spare parts, they cant be used, they cant be driven; theyre all just sitting there, dumped and corroding in the forest.
Mr Maxwell, an archaeologist who has worked at Chernobyl during two field trips, said he was taken to see the Claw by a private guide.
He said the rusting machinery was used to clear-up radioactive graphite that had blown out of reactor four when it exploded 33 years ago.
He added: There are many things in the zone today for which contact for any prolonged period will definitely kill you, and the Claw is definitely the most dangerous of all because its not roped off or inaccessible like other hazards.
Its essentially just sitting in a forest clearing for the rest of time. Its severely potentially lethal.
Mr Maxwell put his bare hand inside to get a reading with a Geiger counter to see how radioactive it still is.
He said the Claw releases something in the region of 39.8 microsieverts per hour (uSv/h) – meaning it would deliver a fatal dose in less than 20 minutes.