back to search results
Image 16 of 16
< Prev
AH_Straw Tubular Stalactite Cave Slovenia_6141.jpg
Straw or Tubular Stalactites are very deilcate, hollow structures. They form when calcium carbonate or calcium sulfate dissolved in the water comes out of solution and is deposited in a ring around the outside of each successive drop as it hangs from the end of the stalactite. Postojna Cave, Slovenia.