Rocky Mountain

Standing 528 metres above the Irish Sea, this granite giant offers one of the most rewarding climbs in the Mournes. The scramble up from Newcastle takes about two hours through proper mountain terrain - rocky outcrops, boggy patches and the odd sheep for company.

Walkers with decent fitness will love the challenge, though it's definitely not one for flip-flops and pushchairs. The summit rewards you with cracking views across Dundrum Bay and the entire Mourne range spreading out like a rumpled green blanket. On clear days you can spot the Isle of Man floating on the horizon.

What makes Rocky Mountain special is the route itself - you're properly in the mountains here, not just walking up a glorified hill. The granite slabs near the top require a bit of scrambling, which adds to the adventure. Kids over 12 with mountain legs will manage fine, but younger ones might find the going tough.

Newcastle sits right at the base, making this an excellent day out from any of the nearby holiday parks. Tollymore Forest Park lies just down the valley if you fancy easier walking the next day. Allow four to five hours for the round trip, and check the weather - these peaks disappear into cloud faster than you'd think.