It leads to a system named "Alaska" and you can visit it only once during the storyline. Other than that the jumpgate is locked. If you still want to get into the minefield: the front of the jump gate is pointing directly at the passage in the minefield. Easy to find.

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"Sorry for offending your delicate sensibilities. Perhaps my next film will be about a talking dog who braves the harsh realities of the world in a heart warming attempt to find his rightful owners, who mistakenly thought he was dead. That way you could watch it and get a fuzzy feeling inside and when it was over you could all go f*ck yourselves." - Troy Duffy, director of The Boondock Saints