Looks like the Klingon Sarcophagus ship might be very real!

[Space Coast]

There are probably a wide variety of beliefs on that point. Some Klingons might believe the dead body is only a shell to be discarded, others believe it must be protected and carefully buried. Humans have a similar range of burial customs as well, don't they?

True, but alien cultures in Trek (hell, in a lot of science fiction) tend to be woefully monolithic in beliefs.

Sure, maybe Discovery will be different, but since this is a prequel not a sequel series, I kinda doubt it. It wouldn't make sense. So I say ancient Klingons if Klingons at all.