The Flash Powder Factory is an underground factory where your Agility, Thieving, and Herblore skills are put to the test. It is only accessible to members, via a trap door inside of the Pick and Lute Tavern, located in Taverley. The quickest way to reach the Flash Powder Factory is by running north of the Taverley Lodestone.
http://www.tip.it/runescape/pages/view/ ... actory.htm
