i just saw white zombie, and that's not it.

to specify, the graveyard was flat, and the entrance to the crypt was flat on the ground, and the two men had to climb down into it.

the vibe of the setting was kind of victorian or british. this film might be pretty old, but i dont remember whether it was a silent film or a talkie. i dont think they showed many silent films on tv in the late seventies... but then again, i dont remember

not sure why they went into the crypt, but i think something bad might have happened to them cause she looked really scary.

so she was more or less freshly dead and buried in an underground crypt that looked like a tiny apartment, in form at least.