It is made up of 5 large domes and is believed to have existed since 8,000 B.C., about 10,000 years ago.
Pretty huge inside. Some places are really like rat-hole size. Some was reportedly dug by communists.
But generally, the cave is safe and can be explored by both the young (from seven years old) and senior citizens.
Lydia and Priscilla, avoid caving during extreme weather conditions, like heavy rain. Like any adventure activity, it can be dangerous if you are not careful.