[snooch_dawg]

Just do a search on "graveyard" or retro dungeon on this board. This topic has been covered a couple time.

However... (this is from some dudes walkthrough.. and i think its right)

You'll probably notice some weird blue symbols on some of the headstones.
These are markers that must be touched to trigger one of the three Retro
Dungeons in the game. There are six total in the area you have to touch.
Activate them all, and then go to the Southeastern corner of the graveyard
(still inside the headstones area). You will need a DAGGER. Simply hold it
on your mouse and click it anywhere at the corner. It will stab itself into
the stone, and the dungeon will pop up outside, again at the Southeastern
corner. This is by far the easiest of the three dungeons (level range 8-10
roughly).