Snowdon Mountain Railway, Wales, UK, 2015

This 800mm (2 foot 71/2 inch) railway is the only cog railway in UK and runs from Llanberis to the top of Mount Snowdon, the highest mountain in Wales. They run 4 Swiss-built steam locos and us the Abt sytem.
For full details see http://www.snowdonrailway.co.uk/abt-rack-railway-and-technical-information
The carriages are of very light construction and when we visited in 2015 we were only allowed half way up the mountain because of high winds and heavy rain.

Note lightweight construction

Typical Welsh weather