Ross Island – Bronze Age copper mines

Overview

The copper mines on Ross Island are among the oldest in northwest Europe. Miners were cutting ore here around 2400 BC, and the copper axes, halberds and daggers they made have turned up across Ireland and into Britain. That is the real reason to walk this claw-shaped peninsula on Lough Leane, though most people come for Ross Castle and never notice that the ground under the oak woods is a Bronze Age industrial site.

Despite the name, Ross Island is not one: a thin neck of land joins it to the mainland, and it’s an easy flat walk from the castle. It sits within Killarney National Park, a UNESCO Biosphere Reserve, with signposted paths through the oaks and along the shore, and clear views south to Mangerton and Torc and west to the Purple and Tomies ranges.

The mines and the castle

Lough Leane’s mineral wealth was noted early: the ninth-century Welsh monk Nennius wrote of the lake ringed with tin, lead, iron and copper. The open shafts and stone-built workings scattered along the walking routes are the physical remains of that, worked on and off for centuries.

At the peninsula’s southern tip, the O’Donoghue Mór clan built Ross Castle in the 15th century to control traffic on the lake. Local prophecy held that it could not fall ‘till on Lough Lein strange ship shall sail’, which is more or less what happened in the Confederate Wars, when Cromwell’s forces floated an artillery vessel up the River Laune and the garrison, the last in Munster to hold out, gave in. The grounds are free; the guided interior tours run from 5 March to 3 November. Worth knowing before you climb the stairs: the interior is steep and awkward for anyone with mobility issues, though the grounds and most trails are flat.

The walks

Three trails cover the peninsula, and you can walk them singly or string them together.

Mining Trail (3 km) – the main loop, starting at Ross Castle and following the shore past the mine shafts before circling back through the grounds. Mostly flat, with interpretive panels on early mining. Reckon on about an hour.

Governors Rock (4 km return) – out to a limestone cliff that drops straight to the water, with an open view across Lough Leane to the mountains. Easily tacked onto the Mining Trail.

Library Point (5 km) – the path to the northern tip of the peninsula, narrowing along the water’s edge to a quiet spot to stop. The furthest point from the castle, but still an easy walk.

If you want more, the official Knockreer Circular Walk (5 km) starts from the Knockreer estate car park nearby and takes in the Lower Lake shoreline and parkland. It’s a separate walk rather than part of Ross Island, despite what some combined ‘loops’ online suggest.

Wildlife

Red deer graze the surrounding woods and are a common sight; the lakeshore draws mute swans and kingfishers, and the reintroduced white-tailed eagles sometimes pass through in spring and summer. Brown trout are fished from the shore near the castle – check what licence or permit you need before casting.

Boat tours

From the jetty beside Ross Castle, hour-long lake cruises (about €15–17) glide past Ross Island for a water-level look at the mines and cliffs, and shorter boats run out to Innisfallen Island and its sixth-century monastic ruins.

Practical information

• Parking: a free car park sits by Ross Castle and fills fast in summer; there’s another free car park at the Knockreer estate.
• Cost: trails are free and open year-round. Castle interior tours (5 March–3 November) are €5 adults, €4 seniors and groups, €3 children and students, €13 family.
• Footwear: paths are good but turn muddy after rain; sturdy shoes help on the uneven ground near Governors Rock.
• Dogs: welcome on the trails but must be kept on a lead at all times.
• Accessibility: the Mining Trail and Library Point are largely flat; a few stone steps near Governors Rock are a barrier to full step-free access.
• Facilities: toilets and a small café at the Ross Castle visitor centre; picnic tables near Library Point.

Trail summary

Come early: the Ross Castle car park is full by mid-morning in July and August. Park up, take the Mining Trail at an easy pace, and you’ll have the shafts, the shoreline and a fair chance of deer before the tour buses arrive.