From double pass thru formation: Center couples roll back (Cast Back) behind trailers to face, pass right shoulders, move around the outside, pass one more dancer and then Pass In with the next. Meanwhile, trailing couples Pass Out, Partner Trade, Pass Out again, then Partner Trade and Pass Thru. Finishes in eight chain thru formation.
Holman Hudspeth 1970
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.