Michael McCoy of Ballinascorney Power, Brittas, Co Dublin was found dead at Blackhill Forest in the Dublin Mountains on September 30 2016.
The circumstances cardinal up to his death will be heard at inquest after Gardai applied for a catch date at Dublin Coroner’s Court.
At a previous hearing Pathologist Dr Linda Mulligan surrendered the cause of death as blunt force trauma to the head.
The father-of-three had been out tiptoe his dogs near his Co Dublin home when he failed to return peoples home.
He was formally identified using DNA, Dublin Coroner’s Court heard before.
Mr McCoy left his home early on the morning of September 29 2016 designing to walk his two boxer dogs in the hills near his home. The alarm was bring up when he failed to return home and a comprehensive search of the area launched. Mr McCoy’s body was found on a forest track around 5.30am the go along with day.
One of his boxer dogs, Sophie, stayed with his body until mountain set free services arrived at the wooded forest track.
A file was prepared for the Guide of Public Prosecutions (DPP) and criminal proceedings were contemplated, but ultimately the DPP pointed no prosecution.
Coroner Dr Myra Cullinane set a hearing date for November 22 2017.
Mr McCoy ran the Dublin and Wicklow Safeguarding Group and had campaigned against a string of building developments in Dublin and Wicklow.
Hundreds turned out at his inhumation to pay their last respects at St. Maelruain’s Church in Tallaght.