The waterfall is fed by the Mahon River, which originates high in the Comeragh plateau.
The valley leading to the falls was carved by glacial erosion during the last ice age.
The cliff face at Mahon Falls is a prominent example of a cirque or corrie, a bowl-shaped depression formed by glaciers.
The area is recognized as part of the Copper Coast UNESCO Global Geopark.
The path to the falls is situated on commonage land, requiring respect for local grazing livestock.
Mahon Falls is a 73-meter waterfall located in the Comeragh Mountains of County Waterford, Ireland. The waterfall is formed by the Mahon River plunging over a glacial corrie cliff. The site is accessible via a gravel path that starts from a designated car park and leads to the base of the falls. The terrain surrounding the falls is a rugged glaciated landscape characterized by steep ridges and dramatic rock formations. The walk is generally considered moderate, covering approximately 1.5 to 2 kilometers each way. It is a key feature of the Copper Coast region and is part of the broader Comeragh Mountains walking trails.
The elevated position on the approach path allows for a wide-angle shot of the full drop against the backdrop of the Comeragh mountains.
Wear waterproof hiking boots, as the path near the base of the waterfall is frequently boggy and uneven.
Check local weather forecasts for the Comeragh Mountains specifically, as conditions can shift rapidly compared to lower elevations.
Carry a windproof and waterproof jacket, even on clear days, due to exposure to mountain winds.
Do not attempt to climb the waterfall face, as the rock is unstable and prone to landslides; avoid visiting during heavy fog for safety reasons.
Keep dogs on a lead at all times due to nearby sheep grazing; follow Leave No Trace principles; do not climb the steep loose scree near the falls.
