In New Orleans, the cuty is too close to sea level, there aren't nearly enough places to bury corpses that they wouldn't float up out of. So, they re-use crypts. In the south coast climate, with the sun beating down on the sealed crypt and heating the interior, the decay of a body is greatly accelerated. A year and a day after a body was placed in the crypt, it can be opened up again, whatever charred-looking remnants are still there are swept into a spot in the back, and a new body can be placed inside.
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In New Orleans, the cuty is too close to sea level, there aren't nearly enough places to bury corpses that they wouldn't float up out of. So, they re-use crypts. In the south coast climate, with the sun beating down on the sealed crypt and heating the interior, the decay of a body is greatly accelerated. A year and a day after a body was placed in the crypt, it can be opened up again, whatever charred-looking remnants are still there are swept into a spot in the back, and a new body can be placed inside.