A retired Melbourne schoolteacher who unearthed a mass grave of Australian soldiers in 2008 believes he has found another burial site on the Gallipoli peninsula.

Lambis Englezos has spent the past four years investigating what he claims is a mass grave holding 143 Australian soldiers.

In 2008, Mr Englezos discovered the ‘lost diggers of Fromelles’, uncovering more than 200 soldiers who had been hastily buried during the First World War.

The remains were subsequently exhumed and buried properly, despite government resistance. The Fromelles battle in July 1916 is believed to be among the “worst 24 hours” in Australian history, with the official Australian War Memorial listing the fatality number at 5,533.

Now, Mr Englezos has revealed to 60 Minutes how he is encountering the same bureaucratic hurdles as the news of the latest discovery unfolds.

Mr Englezos received the Order of Australia (AO) for his Fromelles work.