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We have discovered 12 new molecular hydrogen emission-line objects (MHOs) inthe vicinity of the candidate massive young stellar object Mol 121, in additionto five that were previously known. H2 2.12-micron/H2 2.25-micron flux ratiosindicate another region dominated by fluorescence from a photo-dissociationregion (PDR), and one region that displays an anomalously low H2 2.12-micron/H22.25-micron flux ratio (<1) and coincides with a previously reported deeplyembedded source (DES). Continuum observations at 3 mm reveal five dense cores;the brightest core is coincident with the DES. The next brightest cores areboth associated with cm continuum emission. One of these is coincident with theIRAS source; the other lies at the centroid of a compact outflow defined bybipolar MHOs. The brighter of these bipolar MHOs exhibits [Fe II] emission andboth MHOs are associated with CH3OH maser emission observed at 95 GHz and 44GHz. Masses and column densities of all five cores are consistent withtheoretical predictions for massive star formation. Although it is impossibleto associate all MHOs with driving sources in this region, it is evident thatthere are several outflows along different position angles, and someunambiguous associations can be made. We discuss implications of observed H22.12-micron/H2 2.25-micron and [Fe II] 1.64-micron/H2 2.12-micron flux ratiosand compare the estimated total H2 luminosity with the bolometric luminosity ofthe region. We conclude that the outflows are driven by massive young stellarobjects embedded in cores that are likely to be in different evolutionarystages.

Massive Star Formation, Outflows, and Anomalous H2 Emission in Mol 121 (IRAS 20188+3928)