It’s more than two months since we enjoyed this day out in South Wales. Today it’s too warm for outdoor activities, so I’m in the comfortable shade catching up on some loose ends, one such being this trip. So, here it is – visit “Three Valleys” on Geoff’s Rail Diaries, an illustrated account of our journeyings from Cardiff up the former mining valleys. The mines have all gone, but the railways are thriving – electrification, smart hi-tech new trains, new stations…