Porous stone

I can think of a stone that is generated in the dripstone caves, which appear on the ground where the drops of the longest stalactites fall.

That stone could be porous, bluish-white or yellowish in color.

It would have as a mechanic if it has water or lava on it I dripped in greater quantity, this mechanic could be used for farms with stalactites, increasing the efficiency with which the cauldrons are filled, in addition to decorative uses.

It also occurs to me that this stone goes down from the dripstone caves to another cave or aquifer, and that it does it in a similar way to the rotted dirt, if someone finds this porous stone dripping a lot, they will know that if they explore upwards they will find a dripstone cave.