  In split supersymmetry, the supersymmetric scalar particles are all very
heavy, at least at the order of 10^9 GeV, but the gauginos, Higgsinos, and one
of the neutral Higgs bosons remain below a TeV. Here we further split the split
supersymmetry by taking the Higgsino mass parameter \mu to be very large. In
this case, the \mu problem is avoided and we keep the wino as a dark matter
candidate. A crude gauge coupling unification is still preserved. Dark matter
signals and collider phenomenology are discussed in this \mu-split SUSY
scenario. The most interesting dark matter signal is the annihilation into
monochromatic photons. In colliders, chargino-pair and the associated
chargino-neutralino production cross sections have a certain ratio due to gauge
couplings, and the chargino has long decays.
