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Hemlock Holes maintenance is a workshop area directly to the east of the Hemlock Holes golf club. It used to be the maintenance area for the golf course but it is now filled with empty shipping containers and long abandoned trucks and their trailers. There are three acid deposits and a gold deposit in the main workshop area which can have their resources extracted from them using the correct machinery.
There is also an unnamed power substation immediately to the south of the maintenance area.
Hemlock Holes maintenance appears only in Fallout 76.