We propose to use the unique capabilites of ISO to study G159.6-18.5,
 a possible supernova remnant embedded in an interstellar dust cloud.
 This object appears on the IRAS sky plates as a nearly complete ring
 of emission, and is brightest at 100 microns.  The entire ring has
 a diameter of about 75', and contains regions of enhanced emission
 in several bright knots around the rim as well as in the center. We
 have made observations of this object in the CO(1->0) line as well
 as continuum observations with the VLA and the Effelsberg 100-m
 radio telescope.  The remarkable result of these observations is that
 the shell is filled with non-thermal radiation with a spectral index
 of about -0.7. Since the non-thermal radiation is confined to the
 interior of the shell, we suspect that the shell is material that has
 been swept up by an expanding shock wave.  In order to test this
 hypothesis we wish to make far-infrared observations of two of
 the bright knots using the Long-Wavelength Spectrometer aboard ISO.
 We note that, at b = -18.5 degrees, this object has the highest
 galactic latitude of any known supernova remnant.  The HII region
 IC348 is near the northeast edge of the ring.