Top 10 Largest Known Cave Chambers

Located in central Kentucky, USA, it is the world's longest known cave system with over 643 miles (1,034 kilometers) of mapped passages. The system has been extensively explored, but its full extent remains unknown due to its vast size and limited accessibility. It spans across seven counties and takes up approximately 400 acres. The Mammoth Cave System was recognized as a natural wonder by President John Tyler in 1841.

Situated in central Vietnam, this cave is not only the largest known cave chamber but also holds its own within the world of unique geological features. With a massive size that encompasses an entire village and has its own jungle, it's hard to comprehend its enormity when viewing pictures alone. The cave was first discovered in 1991, and as early as 2009, explorers discovered a lush freshwater lake about 650 feet (198 meters) deep within the cave. It is named after the nearby Son Doong River.

Situated in New Mexico, USA, these underground caves contain limestone formations found on the Earth's surface but are formed entirely below ground due to this process called karst topography. Located about 750 feet (229 meters) directly beneath the Chihuahuan Desert, it remains largely unknown to visitors who only see a fraction of what lies beneath. These caverns cover an area spanning more than 110 square miles.

Situated in New South Wales, Australia, this is one of the oldest caves on Earth and the largest known cave system with a vast network of passages that include underground lakes and waterfalls. The crystal-clear waters flow effortlessly over thousands of feet of natural stone formations and into nearby valleys. These are considered some of the finest examples of lava and basalt formation ever seen.

Located in Guilin, China, it showcases a grand collection of stunning rock formations that have been shaped by millions of years of weathering. The cave includes a vast underground chamber with numerous stalactites and stalagmites resembling the finest artwork anyone has ever seen in nature. One wonders about what life might look like in this magical environment, where humans are completely isolated from sight and hearing outside.

This is located in Utah, USA, known for its natural colors and pure beauty that sets it apart visually from any other cave chamber around the world. The unique formations found within have drawn countless explorers to these passages since their discovery in 1896 by a family searching for a unique gemstone called malachite.

Situated in southwestern France, Lascaux is a prime example of what remains once an ancient people's worship place, home to prehistoric cave paintings that continue to capture our attention to this day with their beauty and historical significance. Located about 15 miles (24 kilometers) from the beautiful Dordogne region, these have brought much knowledge of early humanity into view.

This tropical gem is located in Hawaii, USA, nestled within a dormant volcano on Oahu island – an incredibly unique natural wonder known only to a select few due to its hard-to-reach location. These breathtaking caverns contain large underground pools that seem more like vast oceans of water surrounded by sparkling crystals.

Situated in Turkey, it is carved into the hill and features a number of tunnels stretching for 32 kilometers (20 miles) that date back to the early Christian era where thousands could live without being seen or heard by invaders from outside. Built during the Roman Empire in the 2nd century BC, the city remains intact within the structure despite its age.

The third-longest known cave chamber and second-deepest located near Kutaisi, Georgia – this underground marvel displays natural stone formations that defy understanding by those who explore them, giving birth to a world under their feet where stalactites resemble grand chandeliers of glass, crystal-like structures created through millions of years of erosion.