Last Hope Graveyard
The graveyard consists of two levels. The top level has tombstones, which you may read, but which have no in-game effect. The second level is one long hallway with several smaller rooms containing coffins. Each coffin contains an elite monster inside. In some older versions, when you opened a coffin, you had a chance of acquiring a curse generic skill tree; however, this has been disabled in 1.0 due to bugs it was causing.
At the end of the hallway is the boss, Celia. Once you enter the boss's room, the stairs disappear, and any coffins you did not already open will now open, and the elite monsters will flood out. The boss is a Necromancer that summons undead. To have an easier time beating this boss, enter the crypt at lvl 15 and then leave without going to the boss's room. This sets the boss's level to a lower value and you can come back later to defeat her.
Tip: If you're trying to unlock Necromancer it is a lot safer to do this after you return from the East than prior to going there.