From WoWWiki

As its name suggests, the Sepulcher was once nothing more than graveyard along the road to Lordaeron's Capital City. Since the end of the Third War however, the enterprising Forsaken have converted the old crypt into their base of operations for Silverpine Forest. With Worgen to the south, the Scourge to the east, and the forces of Dalaran to the southeast, it is one of the only places of safety for the Horde in the entire zone.

The Sepulcher has a Mining and Blacksmithing Trainer, but no Class Trainers. It also has an innkeeper, a mailbox, a bat handler, and several vendors and quest givers. Young Forsaken usually arrive here at levels 10-13 when the quests in Tirisfal Glades run out. Unfortunately, the Sepulcher does not offer enough quests to keep going continually until one can head to Hillsbrad Foothills, and thus, most Forsaken are forced to end up in the Barrens or the Ghostlands.

The area itself lies above the Lordaeron coastline nestled within the surrounding hills. The settlement is nothing more than a large graveyard and string of expeditionary caravans and individuals.

Subzones of Silverpine Forest
Ambermill • Beren's Peril • The Dawning Isles • The Dead Field • The Decrepit Ferry • Deep Elem Mine • Fenris Isle • Fenris Keep • The Greymane Wall • The Ivar Patch • Lordamere Lake • Malden's Orchard • North Tide's Hollow • North Tide's Run • Olsen's Farthing • Pyrewood Village • The Sepulcher • Shadowfang Keep • The Shining Strand • The Skittering Dark • South Tide's Run • Valgan's Field