  We report a new correlated phase of two-dimensional charged carriers in high
magnetic fields, manifested by an anisotropic insulating behavior at low
temperatures. It appears near Landau level filling factor $\nu=1/2$ in hole
systems confined to wide GaAs quantum wells when the sample is tilted in
magnetic field to an intermediate angle. The parallel field component
($B_{||}$) leads to a crossing of the lowest two Landau levels, and an
elongated hole wavefunction in the direction of $B_{||}$. Under these
conditions, the in-plane resistance exhibits an insulating behavior, with the
resistance along $B_{||}$ more than 10 times smaller than the resistance
perpendicular to $B_{||}$. We interpret this anisotropic insulating phase as a
two-component, striped Wigner crystal.
