We ventured out that way the weekend, it was jolly good fun!!
Here is a map: http://www.gisqatar.org.qa/ExploreEn/

Type Dukhan in at the Geographic names window, this is an option on your right side of the page.

Good luck

Wh@t wE see....... dePeNds m@inly 0n wHaT wE l0ok foR....