  We study the complementarity between the indirect detection of dark matter
with gamma-rays in H.E.S.S. and the supersymmetry searches with ATLAS at the
Large Hadron Collider in the Focus Point region within the mSUGRA framework.
The sensitivity of the central telescope of the H.E.S.S. II experiment with an
energy threshold of ~ 20 GeV is investigated. We show that the detection of
gamma-ray fluxes of O(10^-12) cm-2s-1 with H.E.S.S. II covers a substantial
part of the Focus Point region which may be more difficult for LHC experiments.
Despite the presence of multi-TeV scalars, we show that LHC will be sensitive
to a complementary part of this region through three body NLSP leptonic decays.
This interesting complementarity between H.E.S.S. II and LHC searches is
further highlighted in terms of the gluino mass and the two lightest neutralino
mass difference.
