Some local residents are against the proposals which would include an exhibition centre as well as other tourist attractions.
The €19 million project includes a visitor centre with a cafe and 'ramblers' lounge, a tree canopy walk and new carpark for 275 cars.
It's expected to triple visitor numbers to the popular walking spot in the Dublin Mountains to 300-thousand people a year.
The Save The Hellfire Campaign group says four years of hard work is paying off, and is thanking more than 23,000 people who have supported it.
Parents Reminded Wicklow SENOs Can Issue Letters Of Eligibility
Wicklow on High Alert With Wind And Rain Warnings In Place – No Incidents Overnight
Snow May Fall On Wicklow Mountains Tonight
Tánaiste Announces near €19 million Investment in Wicklow Roads
Arklow Crowned Ireland’s Top Town for Work-Life Balance
