Stalactite & Stalagmite Growth (2D)

This 2D cave cross-section models how a stalactite and stalagmite grow drip by drip from mineral-saturated water. Raise the drip rate to send more water through the ceiling fracture, or raise the CO2 degassing rate to make each drop precipitate its calcium carbonate faster — watch how the balance between the two decides whether the ceiling formation or the floor formation grows first, across an accelerated timescale of centuries to millennia until they meet and fuse into a column.