Fantastic detail in this 1920 OS map: inclines, railways & mill buildings surrounding Blaenau #Ffestiniog, #Wales. #geology #thestoryofslate

Vibes like you're Sherlock Holmes on your way to see your latest client on a storm wracked hill in Eryri. The @festrail.bsky.social vintage weekend a year ago.
#ffestiniog #schmalspurbahn #dusk #autumn #sherlock #steamtrain