Underground caverns can be of different sizes, from small spaces just large enough for a person to crawl through, to massive chambers that can hold entire ecosystems. Some caverns are even connected by underground rivers or streams, forming complex networks of caves.
Underground caverns are often decorated with stalactites and stalagmites, which are mineral deposits that form when water seeps through the ceiling of the cave and drips onto the floor. The water evaporates, leaving behind the dissolved minerals, which build up over time to form these structures.
Underground caverns can be a beautiful and fascinating sight to behold, and they can also provide important habitats for wildlife. Some caves are even open to the public as tourist attractions, allowing people to explore the wonders of the underground world.