  We present near-infrared spectroscopy and Hubble Space Telescope (HST)
imaging of EROJ003707+0909.5, the brightest of three gravitationally-lensed
images of an Extremely Red Object (ERO) at z=1.6, in the field of the massive
cluster A68 (z=0.255). We exploit the superlative resolution of our HST data
and the enhanced spatial resolution and sensitivity afforded by the lens
amplification to reconstruct the source-plane properties of this ERO. Our
morphological and photometric analysis reveals that EROJ003707 is an L*
early-type disk-galaxy and we estimate that ~10 per cent of EROs with
(R-K)>=5.3 and K<=21 may have similar properties. The unique association of
passive EROs with elliptical galaxies therefore appears to be too simplistic.
We speculate on the evolution of EROJ003707: if gas continues to cool onto this
galaxy in the manner predicted by hierarchical galaxy formation models, then by
the present day, EROJ003707 could evolve into a very luminous spiral galaxy.
