On: 1,700-year-old Roman sarcophagus is unearthed in Budapest

[ceejayoz]

It's made of limestone, which is quite porous. Should be plenty of air exchange over the last 1700 years.

(And they may have done so before opening. It probably wouldn't be mentioned in an article like this.)

[jasonvorhe → ceejayoz]

Then it wasn't hermetically sealed, as the author claims.