I found 8 previously unknown forts near Dundalk shortly after the 'Dronehenge' discovery in 2018. These fort outlines were visible in the crops because of a drought at the time, I returned to the location just a week later and as it had been raining they were not visible any more. Quote from the National Monuments Service - “these features probably represent a prehistoric barrow cemetery comprising up eight individual monuments with two of the eight features being classed as enclosures which might either represent features contemporary with the barrow cemetery or later settlement activity. Text from https://maps.archaeology.ie/HistoricEnvironment/ - Situated in a low-lying landscape with a small NW-SE canalised stream or drain c. 200m to the NE. A concentration of eight ring-ditches, probably representing barrows, was recorded in July 2018 using a drone-mounted camera. They are in a limited area of about 10 acres (c. 4 ha) but are fairly dispersed, being c. 20-50m from their nearest neighbour. This is a circular area (int. diam. c. 12m) defined by a continuous fosse feature, which is very slight S-W and might have a break for an entrance at NW.