and to think that in the earth's existence, somewhere in the timeline of life, maybe trillions or gazillions of years ago, this cave was once filled with ocean water. unimaginably, this cave is about a 1000m above sea level. but the earth is magnificent and we are but its small inhabitants. beautiful crystal structures take its time to grow from carbon dioxide and water and limestone and fffff this world is too beautiful. 

went to the jenolan caves at blue mountains today. breathtaking. it is at a constant temperature of 15 degs throughout the changing seasons!!! the cemented walkway was damp and slippery and claustrophobic. majestic to think that that is the only thing separating us and the vast unknown.