Mullaghcleevaun

Overview

Mullaghcleevaun (Irish: Mullach Cliabháin, “summit of the cradle/basket”) dominates the central spine of the Wicklow Mountains at 849 m (2,785 ft). It is the second‑highest peak in County Wicklow and the 15th‑highest summit in Ireland on the Arderin scale. The mountain sits on a broad, bog‑covered ridge that stretches from the Sally Gap in the north to Tonelagee in the south, offering uninterrupted panoramas of the surrounding glaciated landscape, the Blessington Lakes to the west and the deep valleys of the Glenmacnass River to the southeast.

The name derives from a cradle‑shaped depression near the top, now occupied by Cleevaun Lough – Wicklow’s highest natural lake at 686 m (2,251 ft). The lake sits in a classic north‑facing corrie, a reminder of the region’s glacial past.

History & Background

Mullaghcleevaun has long been a landmark for walkers traversing the Wicklow range. It appears on the classic Vandeleur‑Lynam and Arderin mountain lists, and its prominence of 199 m qualifies it as an Irish Marilyn. The summit is marked by a trig pillar and offers a flat, pebble‑strewn plateau that is visible from many neighbouring peaks, including Lugnaquilla, Kippure and Tonelagee.

The mountain’s geology is typical of the Wicklow range: a mixture of granite tors, peat hags and extensive blanket bog. The surrounding area forms part of Wicklow Mountains National Park, a protected landscape noted for its biodiversity, historic stone walls and the remnants of the 18th‑century Old Military Road that skirts the southern foothills.

What to See & Do

Summit Views

From the trig pillar you can see the sweeping sweep of the central ridge, the glimmering expanse of the Blessington Lakes, and on clear days the distant silhouette of the Irish Sea. The high‑altitude Cleevaun Lough lies just below the summit, its still waters reflecting the sky and the surrounding peaks – a perfect spot for a brief pause.

Ridge Walks

Mullaghcleevaun is a hub for several classic Wicklow routes:

• South‑to‑North Loop (Carraigshouk to Ballynultagh Gap) – An 8.5 km, 3‑4 hour walk that starts at the small “Oasis” car‑park on the R115 (Old Military Road). The route climbs first to Mullaghcleevaun East Top (790 m) before reaching the main summit and retracing the same line.
• Sally Gap to Mullaghcleevaun Ridge – A longer, more demanding undertaking that follows the continuous boggy ridge from the Sally Gap, over Carrigvore, Gravale, Duff Hill and finally onto Mullaghcleevaun East Top and the summit. The ridge walk is prized for its sense of isolation and the dramatic change in terrain.
• Mullaghcleevaun‑Tonelagee Loop – Described by ActiveME as a 16 km, 6‑hour “strenuous but stunningly scenic” loop that links Mullaghcleevaun with Tonelagee (817 m). The route traverses the central ridge, passes the Glenmacnass Waterfall and offers continuous high‑level views.
• Blessington Approach via Carraigshouk – Starting from the car‑park near Carraigshouk (often called “The Oasis”), walkers can head north along the ridge, joining the Sally Gap route after about 3 km. This option avoids the longer approach from the Sally Gap and is popular for a half‑day outing.

Waterfalls & Rivers

The southeastern slopes give birth to the Glenmacnass River, which tumbles over the spectacular Glenmacnass Waterfall before descending into the Glenmacnass Valley. The waterfall is a popular photographic stop for walkers on the Tonelagee loop.

Wildlife

The blanket bog and heathland support a range of birdlife, including meadow pipits, skylarks and occasional raptors such as the buzzard. The lake and surrounding wetlands attract water‑fowl, making early‑morning sightings rewarding for birdwatchers.

Monument at Lough Cleevaun

A small stone monument on the north‑west rim of Lough Cleevaun commemorates two An Óige volunteers who lost their lives while swimming in the lake in the 1970s. The plaque serves as a reminder to respect the remote, deep‑water environment – swimming is not recommended.

Practical Information

Getting There

By Car: From Glendalough, follow the R115 south for about 10 km. Look for signs to the “Oasis” car‑park near Carraigshouk. This is the most common launch point for the southern ascent.

By Public Transport: Buses run from Dublin to Wicklow Town and onward to Glendalough. From Glendalough, the R115 can be walked or cycled to the trailhead; the walk is roughly 10 km and includes gentle inclines.

Seasonal Advice

The mountain is most accessible in late spring to early autumn when the boggy ground is drier. Summer offers the best footing and longer daylight, while winter can bring snow‑covered peat hags that increase difficulty. Always check the weather forecast before heading out; conditions can change rapidly at altitude.

Safety & Preparation

Hill‑walking in Wicklow is classified as a risk sport. Walkers should carry a map, compass and a fully charged mobile device. The terrain includes peat hags, steep sections and occasional loose stone, so a good level of fitness and sure‑footedness are recommended. Recommended gear includes sturdy hiking boots, gaiters (especially in wet conditions), waterproof clothing and, for dogs, a sturdy leash.

Navigation Aids

Digital maps and GPS tracks are available on Komoot and the ActiveME iPhone/Android apps. The summit trig point makes it easy to confirm you have reached the top. Ordnance Survey Discovery Series sheet 56 covers the area in detail.

Facilities

There are no built facilities on the mountain itself. The car‑park provides basic access; water and toilet facilities are available in Glendalough village.

Nearby Attractions

• Glenmacnass Waterfall – a short detour on the Tonelagee loop.
• Blessington Lakes – visible from the summit and ideal for a post‑hike drive.
• Glendalough – historic monastic site with visitor centre, cafés and accommodation.

Mullaghcleevaun offers a quintessential Wicklow experience: a blend of high‑altitude lake scenery, expansive ridge walks and the quiet grandeur of Ireland’s central mountains. Whether you tackle the short south‑to‑north loop or the longer Tonelagee ridge, the summit rewards you with some of the most impressive vistas in the Republic.