Abstract
A review of the nature and origin of high velocity molecular gas in the vicinity of Herbig-Haro objects is presented. This gas has been interpreted as arising from the interaction of stellar winds from young stars with the surrounding molecular cloud . Many of these regions have an asymmetrical spatial distribution of high velocity gas, indicating the presence of bipolar molecular outflows. A discussion of the properties and energetics of these bipolar outflows is presented. In addition, the relationship between the high velocity molecular gas and the Herbig-Haro objects is discussed, as is the physical connection between these two phenomena.
