limestone is porous and will allow water to eventually seep through.
a condensation cycle will occur, and drip percolate the soft tissue and adipocere into a slurry [coffin liquor] that will settle to the bottom of the sarcophagus.
a condensation cycle will occur, and drip percolate the soft tissue and adipocere into a slurry [coffin liquor] that will settle to the bottom of the sarcophagus.