Derrynasaggart Mountains

📍 Border of County Cork and County Kerry, Various

🏛️ Attraction

Last updated: 28 April 2026

Overview

The Derrynasaggart Mountains sit on the Cork‑Kerry border in Munster, forming a rugged spine that surrounds the Clydagh River valley. The range is best known for the twin Paps of Anu – two striking, breast‑shaped peaks that rise to 694 m (East) and 690 m (West) above sea level. Other notable summits include Caherbarnagh (681 m), Mullaghanish (649 m), Knocknabro (592 m), Claragh Mountain (452 m) and Knockbwee (461 m). Villages such as Ballyvourney, Millstreet and Rathmore lie at the foothills, providing convenient bases for walkers.

History & Landscape

The Irish name Cnoic Dhoire na Sagart translates as “hills of the priests’ oak‑grove”, hinting at a landscape once cloaked in ancient woodlands and linked to early Christian activity. The range has long marked the Cork‑Kerry boundary and features folklore surrounding the mother‑goddess Anu, after whom the Paps are named.

Geology

The range is built from Devonian Old Red Sandstone and purple siltstone of the Glenflesk Chloritic Sandstone Formation, intersected by the Killarney/Mallow fault line. Glacial deposits on the northern slopes record the last ice‑cap advance about 130,000 years ago, while volcanic outcrops on the western side hint at late‑Devonian lava flows.

Communications Hub

The summit of Mullaghanish hosts a major radio‑transmitter complex serving RTÉ, TG4, Today FM, Radio Kerry and Newstalk. The mast is a landmark for walkers; the site is occasionally closed for maintenance, so check local notices before planning a summit visit.

Views & Photo Opportunities

  • From the N22 – heading south‑west towards Kerry, the Paps dominate the horizon and can be photographed from several lay‑bys.
  • Town viewpoints – the mountains are clearly visible from Clondrohid, Macroom and Ballyvourney; these spots make easy photo stops before or after a walk.
  • Summit panoramas – on a clear day the Paps offer sightlines to the MacGillycuddy’s Reeks, the Boggeragh range and, in early March, snow‑capped Kerry Highlands.

What to See & Do

Summit Challenge

For experienced hill‑walkers, the Derrynasaggart Mountains Challenge invites you to summit the four recognised peaks of the northeast sector in a single day. The required peaks are:

SummitElevationIrish Grid Ref
Paps East694 mW:133:855
Paps West690 mW:125:855
Caherbarnagh681 mW:192:872
Mullaghanish649 mW:215:818
Successful completion during the Sport Hillwalking season (1 May – 31 Aug) earns a Certificate of Completion and 37 points toward the Irish Challenge Hillwalker of the Year competition. Registration is open year‑round via the High Point Ireland entry form.

Long‑Distance Trails

The Duhallow Way – part of the European E8 route – traverses the Derrynasaggart range on its way from Cork to Kerry. Over three days walkers experience gentle ridges, cross the Boggeragh range and descend into Millstreet before reaching Shrone in Co. Kerry.

Additional Walking Routes

  • Paps Walk – a short, well‑marked route from the Millstreet lay‑by to the twin peaks; suitable for families.
  • Caherbarnagh Ridge – a longer ridge walk linking Caherbarnagh, Glanaprehane and the Paps; expect boggy sections and heather.
  • Knocknabro Loop – starts near Ballyvourney, climbs Knocknabro and descends via the Duhallow Way; good for a half‑day outing.
  • Mullaghanish Summit – access via a service road (check for transmitter‑site restrictions); offers the widest views of Cork and Kerry.
  • Priest’s Leap Pass – a historic mountain pass that provides a dramatic approach to the northern slopes and connects to the Duhallow Way.

Scenic Highlights

  • Paps of Anu – the most photographed peaks in the range, offering panoramic views over the Clydagh valley.
  • Mullaghanish – a broad summit that provides sweeping vistas of both Cork and Kerry countryside and houses the regional radio‑transmitter complex.
  • St. Gobnet’s Wood – a nearby ancient woodland that adds a touch of green serenity to the rugged backdrop.
  • Lough Gortavehy – a small lake on the western flank, noted for its clear waters and surrounding peatland.

Flora, Fauna & Climate

The hills are cloaked in heather‑covered blanket bogs, interspersed with low‑lying grassland and pockets of native oak and birch in the remaining woodlands. The habitat supports red grouse, meadow pipit and occasional hen harrier sightings. High annual precipitation (often exceeding 2,000 mm) creates a moist climate that can change rapidly; walkers should be prepared for rain, wind and mist at any time of year.

Cultural Significance & Gaeltacht

The Derrynasaggart area lies within the Gaeltacht of County Cork, where Irish remains the community language. The name Cnoic Dhoire na Sagart reflects historic oak‑groves that may have sheltered priests during the Penal Laws era. Local folklore celebrates the Paps as symbols of the mother goddess Anu, and the landscape features several ancient stone monuments that echo this mythic past.

Practical Navigation

The preferred map for any Derrynasaggart exploration is the Ordnance Survey Ireland Discovery Series – Sheet 79 (1:50 000), covering the Cork‑Kerry border. A hard‑copy map and a traditional magnetic compass are strongly recommended; reliance on GPS alone is discouraged by local walking authorities.

Practical Information

Access & Parking

While the mountains are open year‑round, access to some summits may cross private land. Verify any access restrictions and, where necessary, seek permission from landowners before setting out. Designated car‑parking spots are marked on the challenge’s interactive map; these are typically small lay‑bys near the trailheads at Millstreet and Ballyvourney.

Registration & Scoring

Participants must register via the Sport Hillwalking Entry Form before 30 June. After completing the four summits in a single day, log the GPS points using the Peakhunter app and submit the Hillwalking Challenge Completion Form within seven days to claim the certificate and competition points.

Maps & Guidebooks

  • OSI Discovery Series – Sheet 79 (Cork & Kerry) – essential for route planning.
  • Guidebooks from local outdoor retailers cover various ascent and inter‑summit options; the MountainViews website lists detailed route descriptions and user comments.

Nearby Facilities

The surrounding towns provide a range of accommodation, food and drink options:

  • Ballyvourney – traditional B&Bs and pubs.
  • Millstreet – several hotels and a weekly market.
  • Macroom – larger hotels and restaurants.
  • Killarney – full‑service tourist infrastructure a short drive away.

Seasonal Considerations

The challenge is officially open during the Sport Hillwalking season (1 May – 31 Aug). Outside this window, the terrain remains accessible, but weather can be more unpredictable and daylight hours shorter. Early March can bring snow‑capped views of the Kerry Highlands.

Practical Tips for Walkers

  • Water & food – no services on the hills; carry sufficient water and snacks.
  • Footwear – sturdy boots with good ankle support are advisable; boggy sections can be slippery.
  • Weather – the range is exposed; check forecasts and be prepared for rapid changes.
  • Dogs – permitted on most routes but keep them under control, especially near private land and the Mullaghanish transmitter site.
  • Leave No Trace – take litter home and stick to established paths to protect the delicate heather and bog habitats.

All information is drawn from publicly available sources and reflects the status of facilities and routes at the time of writing.