Europe's only four-person zip line will see thrill seekers zoom across a Welsh slate mine at speeds of up to 70 miles per hour.
The Snowdonia National Park says wardens have spoken to "significant numbers" of walkers in recent days who were simply ill prepared.
Staff and volunteers on the Snowdon Mountain Railway made a trip in a carriage which is a replica of the very first ones to run on the line.
A 70-year-old climber died yesterday after a climbing accident in Snowdonia. It happened at Dinas Cromlech in the Llanberis Pass.
John Ellis Roberts, a former head warden of Snowdonia National Park, fell 25ft on to a ledge whilst on a climbing crag.
Mr Roberts was winched by an RAF Sea King helicopter based at Valley in Anglesey and flown to a hospital at Bangor. He was later declared dead at the hospital.
People have been paying tribute to Mr Roberts, who over the years took part in scores of rescues in the mountains.
An RAF helicopter had to extend its rescue cable to its full 250ft length this afternoon to rescue a climber stuck down a steep ridge north of the Ogwen Valley in Snowdonia.
The Sea King, from Valley on Anglesey, flew the 65-year-old experienced climber - who was unharmed - to the Ogwen mountain rescue base.
Mountain rescuers in Snowdonia say a walker was 'very lucky' to escape serious injury after falling 50ft on the 3,000ft peak of Tryfan.
The man in his 30s was descending the mountain when he fell down a steep slope and ended up unconscious in a stream, where he later came round.
18 members of Ogwen Valley mountain rescue team and an RAF helicopter from Anglesey were called out to assist.
The man was winched off the peak and flown to hospital in Bangor with head and possible back injuries.
A young couple from Flintshire and their dog have been saved, after being trapped in a dangerous gully in Snowdonia last night.
Rescuers praised the crew of a police helicopter who had photographed their location on Tryfan.
They landed near the headquarters of Ogwen Mountain Rescue Team, and handed over a computer memory stick, enabling team organisers to know the exact whereabouts of the couple.
Team spokesman Chris Lloyd said they were grateful for their support, and a great use of modern communications.
The couple, who are in their twenties, were described as being inadequately equipped for a day on the mountains, but were unharmed.
National Park staff in Snowdonia have launched a new attempt to eradicate rhododendrons which are taking over thousands of acres of the park.
They are spending £10m on the project - but it could take up to five years to complete, as Ian Lang reports.
Rhododendrons are popular garden plants, but in Snowdonia they are spreading beyond control.
The rhododendrons now cover over two thousand hectares of Snowdonia alone. There's concern that it could damage the fragile eco-system there by stopping other plants from growing.
There are many different types of rhododendron which can make them difficult to identify.
Often the plants can be identified by their colourful, bell-shaped flowers which are often in round clusters.
The battle is on in Snowdonia to eradicate rhododendrons which now cover over 2,000 hectares of land. The plant damages the fragile eco-system because the dense evergreen foliage means few plants can compete against them. Existing native vegetation can be virtually wiped out.
Rhododendrons are also very difficult to kill, often requiring several attempts to inject or cut back and burn bushes before they are finally eradicated. A single bush can produce one million tiny seeds per year, so can spread to cover vast areas if left unchecked.
Rhododendron ponticum, the common purple flowered rhododendron, was introduced into large gardens in Victorian times. Conditions in the park have proved perfect and they have spread rapidly since then.
Conservation organisations are working with local gardeners to persuade them to replace the bushes with non-invasive species.
A man has died after falling hundreds of feet while climbing Snowdon with a friend.The 21 year old was descending from the summit yesterday when he went down a steep grassy slope and fell 500 feet from a cliff.
His body was recovered by an RAF rescue helicopter from Valley, Anglesey. The man's walking companion was heard calling for help from the mountainside and winched to safety.
A rescuer was lowered 100ft down a Snowdonia cliff to aid three men who were stuck after making a navigational error last night.
Twelve members of the Ogwen mountain rescue team turned out to the Idwal Slabs after one of the group dialled 999.
The three men, from Portsmouth, were then hauled up the cliff one by one by rope.