Also a bit OT.
Although the UK can’t claim to have invented the mountainbike, maybe we invented the gravel bike – but just forgot to give it a catchy marketing name.
As a result of the popularity of rough stuff riding in the early 1950s there were bikes specifically aimed at the rough stuff fraternity, eg the Rudge Pathfinder* and the Dawes Windrush.
They used the same basic frames as the rest of their range, but in 531, and in the case of the Windrush, the pump pegs were moved to the downtube from the toptube so the pump didn’t interfere when shouldering.
I’m building up an early 1950s Windrush to a suitable RSF spec, and it’ll be getting an appropriate workout shortly.
.
.
*Actually the same frame as the Raleigh Lenton, Humber Clipper, and Triumph Torrington, although I don’t remember if they had reinforced fork steerers like the Rudge.