  We study complex structure monodromies of certain Calabi-Yau fibrations and
find evidence that they are mirror to Calabi-Yau manifolds with NS5 brane on a
divisor. This gives a simple way to construct mirrors to any Calabi-Yau
hypersurface with NS5 branes wrapped on divisors and a complementary
interpretation of some recent calculations in open string mirror symmetry.
