A radio source with a spectral index of -2.2 between 0.08 and 1.425 GH
z has been observed at the Very Large Array (VLA) at 1.425 GHz with re
solution similar to 3 arcsec. The projected linear length of the sourc
e is 56 kpc with an average projected distance of 32 kpc from the cent
roid of the rich southern cluster Abell 4038, assuming the source is i
n the cluster. The physical parameters of the source include a high mi
nimum-energy field (B-me) of 38 mu G, which is unusual for a source of
low surface brightness and relaxed appearance, but is explained by it
s unusually steep spectrum. Although its radio morphology has some cha
racteristics of a narrow-angle-tail source (NAT), the absence of an id
entified host galaxy (m(R) greater than or equal to 23.0) makes it unl
ikely that the source is a working radio galaxy. The relic is probably
the remains of an FR II radio galaxy that was once energized by a par
ticular bright cluster elliptical now 18 kpc to its east. The density
of the intracluster gas has been sufficient to confine the source and
preserve its morphology, permitting the source to age and its spectrum
to steepen through synchrotron and inverse Compton energy losses.