Overview
Poulanass Waterfall is a striking natural feature on the Wicklow Way, Ireland’s first national waymarked trail. Located in the steep, wooded slopes above the Upper Lake at Glendalough, the cascade tumbles into a series of clear plunge pools before vanishing into a moss-heavy gorge. It is a favourite stop for hikers tackling Stage 4 of the long-distance route, which covers the 14.5 km stretch from Glendalough to the glacial valley of Glenmalure. While the waterfall itself is a short diversion from the main trail, reaching it requires a focused, upward push that rewards visitors with close-up views of the falling water and sweeping perspectives over the monastic valley below.
The site operates on a first-come, first-served basis with no admission fee. Because it sits within the Wicklow Mountains National Park, the path is maintained by the National Parks and Wildlife Service, though hikers should always check for seasonal route adjustments before setting out.
The Walk & Trail Conditions
The approach to Poulanass begins with a steep, stepped path that climbs quickly through mixed woodland. After roughly 200 metres of ascent, the route transitions onto a well-constructed boardwalk that hugs the edge of the gorge. This boardwalk is a vital piece of infrastructure, allowing safe passage over slick rocks and steep drop-offs while keeping erosion in check.
The most distinctive feature of the route is the series of more than 600 wooden steps that lead directly to a viewing platform overlooking the Upper Lake. These steps have been recently upgraded with switchbacks to manage the gradient and improve safety. From the platform, the roar of the waterfall dominates the soundscape, and the contrast between the dark basalt rock and the churning white water is striking.
Trail conditions change rapidly in the mountains. The wooden steps and boardwalk become noticeably slippery when wet, so sturdy footwear with good grip is essential. In winter, ice can form on the steps, making the climb hazardous. The National Parks and Wildlife Service occasionally re-routes sections of the trail network after severe storms. If the direct Pink Route is closed, look for silver-arrow detours that guide walkers around damaged sections. Always carry a map or download a reliable hiking app before heading out, as mobile signal can be patchy in the gorge.
What to See & Do
Poulanass Waterfall is rarely visited in isolation. It serves as a natural waypoint for several established routes in the area:
- The Pink Route (Poulanass): A 1.6 km out-and-back trail that takes about 45 minutes. This is the most direct way to see the cascade and the plunge pools.
- The Bronze Route: A shorter 1.0 km loop that combines the waterfall with a visit to St Kevin’s Cell and a detour to Reefert Church, taking roughly 30 minutes.
- The Spinc Walk: A classic strenuous loop (9.5–11.5 km) that incorporates the boardwalk and wooden steps before climbing to the Spinc cliffs. This route offers panoramic views of both the Upper and Lower Lakes and typically takes 3 to 4 hours.
Beyond the hike itself, the gorge is a micro-habitat for native flora and fauna. The damp, shaded environment supports thick carpets of moss, lichens, and ferns clinging to the rock faces. Birdwatchers often spot kingfishers darting over the pools, while treecreepers and jays are common in the surrounding oak and pine woodland. On quieter days, you may also catch sight of red squirrels foraging in the canopy.
For photographers, the waterfall is at its most dramatic after heavy rain, when the flow swells and the plunge pools take on a vivid turquoise hue. Early morning or late afternoon light works best, casting soft shadows and highlighting the mist rising from the gorge. A tripod is highly recommended, especially for capturing long-exposure shots of the water.
When to Visit
Timing your visit can significantly improve the experience:
- After rainfall: The cascade is most powerful and visually striking when the river is swollen.
- Late spring to early autumn: Woodland foliage is lush, daylight hours are long, and trail conditions are generally stable.
- Early morning or late afternoon: These times offer softer lighting for photography and fewer crowds on the steps.
- Winter: The waterfall remains accessible, but icy steps and shorter days require careful planning. Stick to shorter loops and carry appropriate cold-weather gear.
Practical Information & Getting There
Access & Parking The main starting point for the Poulanass trail is the Upper Lake car park near the Glendalough Visitor Centre. Parking costs €4 per vehicle. Alternatively, the Lower Lake car park is free but adds approximately 1.5 km of walking to reach the trailhead. Both car parks fill quickly on weekends and during peak summer months, so arriving before 10 am is advisable.
Public Transport Dublin Bus operates regular services from Dublin city centre to Glendalough. From the bus stop, it is a 30-minute walk to the trailhead following the Wicklow Way signs, or you can take a short taxi ride to the visitor centre.
Trail Signage & Navigation All routes are clearly marked with colour-coded arrows from the National Park Information Office near the Upper Lake. The main trail follows the universal yellow “walking man” symbol. For detailed navigation, the ActiveME app provides live GPS tracking of the Wicklow Way route, including elevation profiles and distance markers.
What to Bring
- Waterproof hiking boots with ankle support
- Rain jacket and spare layers (mountain weather changes quickly)
- Water and high-energy snacks
- Camera with a tripod (optional)
- Fully charged phone or physical map
Safety Notes The 600+ wooden steps are steep and can be uneven. Take your time, use the handrails where available, and watch for loose stones or wet moss. Dogs are welcome on the trail but must be kept on a short lead, especially near the boardwalk and viewing platform where steep drop-offs are present. There are no dedicated facilities at the waterfall itself, so plan to use the toilets at the Visitor Centre before you start your hike.
For further route details, maps, and stage notes, refer to the official Wicklow Way Stage 4 guide.