George asked: Received the question below in an email. Anyone have the answer?
------- Forwarded message follows ------- <snip> This summer on a section from Fradley towards Rugby we noticed small doors in the sides of several bridge abutments. What were they for? <snip> Are they not for keeping the boards in, that are used to dam the canal? John nb Charlotte Rose [Non-text portions of this message have been removed]
