Red Gap

{{Short description|Hill in the Dublin Mountains, Ireland}}

{{about|the hill in Ireland|the populated place on Vancouver Island, Canada|Red Gap, British Columbia}}

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Red Gap, also known as Saggart Hill or Slieve Thoul,{{cite web | url = https://www.logainm.ie/en/17197 | title = Sliabh Toll/Slievethoul | work = Placenames Database of Ireland (logainm.ie) | publisher = Government of Ireland - Department of Arts, Heritage and the Gaeltacht and Dublin City University | accessdate = 3 April 2022}} is a hill 397 metres above sea level situated 16 kilometres southwest of Dublin city centre in the Dublin Mountains close to Saggart and Rathcoole. The hill gets its name from the townland of 'Redgap' which lies just to the north of it.{{cite web | url = https://www.logainm.ie/en/17194 | title = An Bhearna Dhearg/Redgap | work = Placenames Database of Ireland (logainm.ie) | publisher = Government of Ireland - Department of Arts, Heritage and the Gaeltacht and Dublin City University | accessdate = 3 April 2022}} Today, Red Gap is home to farmland and telecommunication masts. The hill has FM radio transmitters for Newstalk, Kfm, LMFM, iRadio and East Coast FM.

The hill is also home to low-power fill in transmitters of Nova 100 and 4FM, designed to cover the Dublin commuter belt

The old-time song "Campbell's farewell to Red Gap" is believed to be referring to this hill.