The view below is of the area behind the middle cylinder, which is normally obscured by the boiler. This small area gives some idea of the amount of pipework on a locomotive like Boscastle. The large bundle of small pipes consists of motion oil pipes coming from the near side (RHS) to various points on the left hand side and cylinder oil pipes coming from the far side (LHS) to parts on the middle cylinder. The atomiser steam supply pipes can also be seen and lower down are the pipes described in the 6th September overhaul page.
The above photo (looking forward) shows the large vacuum pipe on the left with the steam heat pipe for carriage warming, on the right.
The large red cross member supports the middle slidebar and expansion links. The two pads either side of this, take the weight of and secure the front of the boiler.