  Extended, steep, and ultra-steep spectrum radio emission in a galaxy cluster
is usually associated with recent mergers. Simulations show that radio
phoenixes are aged radio galaxy lobes whose emission reactivates when a low
Mach shock compresses it. A85 hosts a textbook example of a radio phoenix at
about 320 kpc southwest of the cluster center. We present a new high resolution
325 MHz GMRT radio map illustrating this radio phoenix's complex and
filamentary structure. The full extent of the radio structure is revealed for
the first time from these radio images of A85. Using archival \textit{Chandra}
X-ray observations, we applied an automated 2-D shock finder to the X-ray
surface brightness and Adaptive Circular Binning (ACB) temperature maps which
confirmed a bow shock at the location of the radio phoenix. We also compared
the Mach number from the X-ray data with the radio-derived Mach number in the
same region using multi-frequency radio observations and find that they are
consistent within the 1$\sigma$ error level.
