  An insightful viewpoint was proposed by Susskind about AMPS firewall: the
region behind the firewall does not exist and the firewall is an extension of
the singularity. In this work, we provided a possible picture of this idea by
combining Newman's complex metric and Dvali-Gomez BEC black holes, which are
Bose-Einstein condensates of N gravitons. The inner space behind the horizon is
a realized imaginary space encrusted by the real space outside the horizon. In
this way, the singularity extents to the horizon to make a firewall for the
infalling observer. Some gravitons escape during the fluctuation of the BEC
black hole, resulting in a micro-transparent horizon which makes the firewall
exposes slightly to an observer outside the horizon. This picture allows
limited communications across the horizon.
