Calcite crystals and water droplets slide down the slope one after another.

Whoa!  “Bye-bye, little crystal!  I am going on” says the droplet leaving the crystal hanging on other crystals on the slope.  And so, through many years, the crystals build cave formations that look like petrified waterfalls, which are called flowstones.


Did you know?
Tour guides or speleologists can show you dripstones in commercial caves.  In Croatia, for example, you can visit Baredine Cave in Istria, Cerovačke Caves in Lika, Lokvarka Cave in Gorski Kotar, Veternica Cave near Zagreb, and many other caves.  One should never break dripstones or take them out of a cave.

“Oh good, we’ve slowed down a bit … Look, we have made a beautiful lake” say the crystals.  Such small ponds with dams of calcite crystals are called rimstone pools.

Water droplets dripping into such shallow rimstone pools sometimes roll the crystals around.  The crystals stick to each other, get polished and become small round balls.

“My head is spinning …. Ahhhhhh!  What a headache!”  “Who cares, we are so pretty!”  “Look, I am perfectly round and shiny.  Aren’t I beautiful?” says a small round shiny stone.  And thus, cave pearls grow and get rounded in some rimstone pools.  

Did you know?

Pearls also form in some sea shells in the ocean.
Cave pearls are usually as large as a pea, but they can grow to be as large as a fist.

Water droplets and crystals also jump into quiet lakes where they say good bye to each other.  “I am going to join my brothers” says the crystal and grabs onto the cave raft made of many other calcite crystals.

Sometimes the cave rafts attach to the edge of the lake, forming shiny shelfstones.

Did you know?

Cave shrimps, cave salamanders, endemic Croatian leeches and other cave animals do not have eyes because they spend their entire life in complete underground darkness.  These animals do not need eyes in the dark and have therefore lost their eyesight.