  We study Weil-Petersson (WP) geodesics with narrow end invariant and develop
techniques to control length-functions and twist parameters along them and
prescribe their itinerary in the moduli space of Riemann surfaces. This class
of geodesics is rich enough to provide for examples of closed WP geodesics in
the thin part of the moduli space, as well as divergent WP geodesic rays with
minimal filling ending lamination.
  Some ingredients of independent interest are the following: A strength
version of Wolpert's Geodesic Limit Theorem proved in Sec.4. The stability of
hierarchy resolution paths between narrow pairs of partial markings or
laminations in the pants graph proved in Sec.5. A kind of symbolic coding for
laminations in terms of subsurface coefficients presented in Sec.7.
