1. Morning Glory
It's absolutely accurate and precise to say that this is one of the most stunning pits in the world. Situated in Yellowstone Park, Wyoming, USA, Morning Glory boasts a depth of about 8 meters. The hot spring lake of Morning Glory is considered a signature feature of this park, renowned for its vibrant colors. The pit was named in 1883 by the wife of a park assistant director because of its resemblance to the morning glory flower. The unique coloration of this pit is attributed to a specific type of bacteria living in the water, which also adds to the incredibly rare beauty of Morning Glory. However, there was once a threat to its distinct coloration when a nearby road was opened, leading many enthusiastic tourists to throw coins into the pit, posing a risk to the existence of the bacteria inhabiting the water.


2. Bimmah
This pit was naturally formed when the layer of sand and weak limestone collapsed, spanning approximately 39m wide and 18m deep. There's an underwater tunnel here that stretches 500m out to the sea, creating a harmonious blend between fresh and saltwater within the pit. It's a diveable pit, but caution is advised during extreme tides as divers may encounter dangers. Bimmah Pit is located about 6km from the landmark Dibab, Oman.


3. Dean's Blue
Dean's Blue is a sea pit with the deepest depth on the planet, reaching 202m deep. Its current name is derived from the local landowner's name. Located within a small bay, Dean's Blue is one of the most renowned spots in the world for passionate divers. In April 2008, the Vertical Blue free diving competition was held here, breaking 25 national and 5 world records. Diver William Trubridge also broke the world free diving record at a depth of 84m without using fins, a feat achieved by a skilled athlete from New Zealand.


4. IK Kil
The pit boasts a depth of approximately 40m, with a mouth diameter of 60m. It's often open to locals for swimming activities and welcomes tour buses for sightseeing. Visitors can descend into the pit via a staircase clinging to the rocky slope. Additionally, it serves as an ideal hiding place for a rare species of smooth-skinned fish. IK Kil is located at the northern center of the Yucatan Peninsula and is part of the IK Kil Archaeological Park. It's a renowned natural pit outside the city of Tinum, Yucatan, Mexico.


5. Great Blue
Located about 70km off the coast of Belize, it's an underwater pit near the center of Lighthouse Reef. This pit has a circular mouth with a diameter of 300m and a depth of 124m. Great Blue is part of the Belize Barrier Reef Reserve System, a UNESCO World Heritage Site. Here, visitors have the great opportunity to encounter rare fish species such as groupers, Caribbean reef sharks, and even hammerhead sharks. It's undoubtedly an enticing destination, a dream come true for diving enthusiasts worldwide who love exploring the wonders of the ocean.


6. Zacaton
With a depth of 335m, it's the deepest submerged pit in the world. NASA measured the water-filled portion of the pit at 319m deep, with the remaining 6m being dry. Zacaton is the only pit among the five in Rancho La Azufrosa with significant water flow. Its name originates from the picturesque floating islands of dry grass drifting freely on the water's surface within the pit. Zacaton is also a thermal pit located in the city of Aldama, in the northern part of Tamaulipas state, Mexico.

7. Red Pit
Explored depth of this pit is 530m, renowned for its numerous caves and cliffs rising up to 241m above the lake level. Red Pit can hold about 25 - 30 million m3, making it the world's third-largest pit. Beneath the pit lies underground watercourses, ensuring stable lake water levels. This place is a reservoir of limestone water near the city of Imotski, Croatia.


8. Giant's Kettle
It will be an incredibly enticing destination and a delightful surprise for travelers in Rovaniemi, Finland, and elsewhere due to its uniqueness and distinctive features. That's the peculiar yet captivating appearance of Giant's Kettle, resembling a giant-sized water kettle with diameters ranging from 5.7 to 8m and a height of 15.4m. The pit is divided into two parts and holds only a small amount of water.

9. NeverSink Pit
A limestone pit in Alabama, USA. It's undoubtedly a favored choice for photographers worldwide because of its breathtaking landscapes, featuring a blend of vivid green moss clinging firmly to the rocky walls and majestic waterfalls. This pit has a depth of 50m, a mouth width of 12m, and expands to 30m at the bottom. Notably, NeverSink Pit is a refuge for bats and some endangered species of salamanders.

11. Balaa
Located in northern Lebanon, this pit is approximately 250m deep. What makes it special and attractive is the majestic waterfall cascading through multiple rock layers. It serves as a significant and awe-inspiring highlight to draw tourists for exploration, ideal for those who love to discover the grandeur, magnificence, and unique beauty that nature quietly offers.

