A stranger on the Chinnor & Princes Risborough Railway. DATS (Data Acquisition & Testing Services) 43066 crosses Horsenden Lane on 2 April 2022 with the 1C02 09:50 Princes Risborough to Chinnor service, during the line's Diesel Gala. Note the gateman with the green flag. Also note the clouds, that were rapidly building up after a bright and frosty start to the day.