  Gas surrounding high redshift galaxies has been studied through observations
of absorption line systems toward background quasars for decades. However, it
has proven difficult to identify and characterize the galaxies associated with
these absorbers due to the intrinsic faintness of the galaxies compared to the
quasars at optical wavelengths. Utilizing the Atacama Large
Millimeter/Submillimeter Array, we report on detections of [CII] 158 micron
line and dust continuum emission from two galaxies associated with two such
absorbers at a redshift of z~4. Our results indicate that the hosts of these
high-metallicity absorbers have physical properties similar to massive
star-forming galaxies and are embedded in enriched neutral hydrogen gas
reservoirs that extend well beyond the star-forming interstellar medium of
these galaxies.
