Falling Masonry
Easy, ceilidh
4-couple longways; 32-bar jigs.

A1: Hands in lines, forward and back, drop hands, cross over, stay facing out.
    (Variants possible here with arching).

A2: Hands in lines, backward into the set (touching glutes optional), forward,
    drop hands, cross backward (same shoulder) into original lines.

B1: "Falling Masonry" figure (like a collapsing chimney):
     Tops gallop down while everyone else moves up (important);
     new tops the same, until all four have galloped down.
     (A new couple starts every two bars).

B2: 1s to the bottom again, others move up, all swing when you arrive
    in progressed place.

(From Jonathan Coxhead's calling and my memory.)  

Fun, easy dance.