  In these proceedings, we discuss recent results from d+Au collisions in
PHENIX ridge related measurements and their possible hydrodynamic origin. We
present the v2 at midrapidity and measurements of the pseudorapidity dependence
of the ridge, distinguishing between the d-going and Au-going directions. We
investigate the possible geometrical origin by comparing v2 in d+Au to that in
p+Pb, Au+Au and Pb+Pb collisions. Future plans to clarify the role of geometry
in small collision systems at RHIC are discussed.
