The waterfall is formed where the river drops over a sheer basalt cliff face typical of the Antrim plateau.
The village name 'Gleno' is derived from the Irish 'Gleann Ó', meaning 'Glen of the Yew'.
The woodland surrounding the waterfall contains remnants of ancient hazel and ash trees characteristic of native Irish valley forests.
The high humidity within the gorge creates a distinct microclimate, encouraging the growth of rare bryophyte species.
The site was gifted to the National Trust in 1964 by a local benefactor to preserve its natural beauty.
Evidence of traditional water-powered milling historically existed along this stretch of the river.
Gleno Waterfall is a dramatic 30-foot cascade located within a sheltered gorge in the Glens of Antrim. The site is managed by the National Trust and features a winding path that descends into the wooded valley floor. It is geologically significant for its exposure of basaltic rock layers formed by ancient volcanic activity. The waterfall is fed by the Gleno River, which flows through the village of Gleno before plunging over the cliff edge. A series of steep steps and footbridges provide access to viewing points surrounding the base of the falls. The site is part of a wider network of valleys known for their lush, humid microclimates that support various ferns and mosses. It serves as a natural habitat for local wildlife, including dippers and grey wagtails. The area remains a preserved example of Northern Ireland's diverse coastal glen geography.
The wooden bridge platform provides the best vantage point for capturing the full height of the waterfall.
Wear waterproof footwear as the paths near the waterfall are consistently wet and can be slippery.
Bring a light waterproof jacket even on dry days to protect against the persistent mist from the falls.
The descent is steep; use the provided handrails when navigating the steps down into the gorge.
Do not attempt to climb the rock face or enter the water directly below the falls, as the rocks are extremely slippery and unstable.
Stick to designated paths to protect the delicate flora on the steep valley sides; keep dogs on a leash.
