Quite unbelievably, Great Rocks Junction signal box is of an identical vintage to the previous box seen on this trip, see....
https://www.ontheupfast.com/v/photos/21936chg/28004564404/peak-forest-south-signal-box In fact, this box predates Peak Forest South by two years but its present drastically altered design would not tell you this. At some time in the past, the roof was removed and it was then painted in a hideous orangy-yellow colour. Finally, in the early 2000s it was clad in uPVC with the toilet block added on the far end. Hard to recognise it as a 1923 Midland type 4d box but that is what it actually is!