Experts believe the estimated 500 victims – including children – were shot in the back of the head by dictator Josef Stalin’s secret police in the 1930s.
Archeologist Yaroslav Livansky said: “Practically all the skulls have bullet wounds. We also found clothes, boots and personal belongings.
“People obviously did not know where they were being taken after being hauled out of their homes and ordered to dress quickly.”
Instead of being taken to work camps, victims were executed at the tree-shrouded site near Vladivostok.
Mr Livansky added: “Among the remains were lots of vodka bottles. This is probably how the killers coped with the stress of their work.”