Phil Benbow, secretary of the Llanberis Mountain Rescue Team, said conditions on many mountains were treacherous.
Llanberis Mountain Rescue was called out to help the man on the Watkin Path.
BBC: Snowdon walker airlifted after 1,300ft Watkin Path fall
Gwyn Roberts, of Llanberis Mountain Rescue Team, said it was a recognised route, but treacherous.
Llanberis Rescue Team said it regularly saved walkers who had failed to check the weather forecast.
The scheme is based on the same principle as Dinorwig's First Hydro plant in Llanberis.
The court was told Mr Williams used the Llanberis path and railway track to reach the summit.
BBC: Snowdon 4x4 case goes ahead without accused Craig Williams
However, the A542 Horseshoe Pass in Denbighshire and the A4086 Llanberis Pass are now said to be passable.
A4086 Pen-y-Pass in both directions between Market Street (Llanberis) and A498 (Nant Peris).
The Llanberis rescuers also believe that it is probably the busiest in Britain.
Llanberis rescue team secretary Ian Henderson said using the train enabled the members to take more equipment up the mountain.
BBC: NEWS | UK | Wales | North West Wales | Walker dies after mountain alert
Ho Gaya Na Pyar (Love Has Finally Happened) was shot at Dolbadarn Castle and the Llanberis mountain railway in north Wales.
BBC: NEWS | UK | Wales | North East Wales | Doctor takes Bollywood to wards
Around 15 members of the Llanberis Mountain Rescue Team were called to help with the emergency just before 1200 GMT on Thursday.
BBC: NEWS | UK | Wales | North West Wales | Walker dies after mountain alert
For instance, a pillar will mark the intersection of the Llanberis and Snowdon Ranger paths, which the authority said walkers often mix up.
The mountain rescue team assisted with the operation to reach the man who was on the Llanberis path when he complained of chest pains.
BBC: NEWS | UK | Wales | North West Wales | Walker dies after mountain alert
Ian Henderson, secretary of the Llanberis Mountain Rescue team, confirmed the three rescues, including the latest on Friday, when 23 team members were involved.
The museum currently employs 650 staff at sites across Wales, including Cardiff, St Fagans, the National Waterfront Museum in Swansea and the National Slate Museum in Llanberis.
"This new service will be a valuable service to everyone who intends to walk on the mountains in Snowdonia, " said John Grisdale, chairman of the Llanberis Rescue Team.
Gwyn Roberts, of Llanberis Mountain Rescue Team, said the weather at lower levels might be sunny with blue skies, but near the summit Snowdon was "another world, " deceptive and dangerous.
As well as the flagship museum in Cathays Park, Cardiff, other free-entry venues included the Big Pit mining museum at Blaenavon, south east Wales, and the Welsh Slate Museum at Llanberis, north Wales.
As well as the main national museum in Cardiff, the free visitor sites include the Big Pit mining museum at Blaenavon in south east Wales and the Welsh Slate Museum at Llanberis in north Wales.
Six of the recycled stone pillars marking the main paths up the mountain - Llanberis Path, Rhyd-Ddu Path, Snowdon Ranger Path, Miners Track and the Pyg Track - are being erected over the next few weeks.
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