[Evgeniuz]

Its form may be a way to conserve bricks: https://en.wikipedia.org/wiki/Crinkle_crankle_wall

[noir_lord]

I think the bigger feature of the two is that this type of wall resists lateral pressure better and uses less materials[1]

[1] https://warwick.ac.uk/fac/sci/eng/elith/publications/all_pub...