Daikoku Sulfur Cauldron

Daikoku Sulphur Cauldron at the moment of discovery, Northern Marianas

A unique pool of liquid sulfur at the summit of a submarine volcano, one of the few in the world.

Lake Bonney – lake in Antarctica with laughing gas

Lake Bonney from satellite, Antarctica. Inscription "Lake Bonney" is on the eastern lobe.

Frozen lake with unique geochemistry. The east lobe of the lake is saturated with nitrous oxide – "laughing gas" and dimethylsulfoxide. Another part of lake is rich with dimethylsulfide – possibly produced by microorganisms.

Lakes and streams

Laguna Verde, Potosí in Bolivia

Wondermondo 🢖 Categories of wonders 🢖 Geological wonders 🢖 Lakes and streams Category Lakes and streams Described lakes and streams What is included in this category? This category includes unusual lakes, sea bays and streams of the world. One though should remember the principle of Wondermondo: here the landmarks, in general, are smaller than 500 km³, thus here are not included […]

Kawah Ijen

The blue fire of Kawah Ijen, Indonesia

Turquoise-colored, extremely acid lake with a diameter of 1 km. Acidity – 0.5 pH. Nearly pure deposits of sulfur are located in the caldera. The burning sulfuric gas creates a very impressive blue flame in the night.

Lonar crater

Lonar crater lake, India

A meteorite crater filled with a saltwater lake. The bolide hit the basaltic rock approximately 570,000 years ago. The diameter of the crater is 1.8 km, with a 1.2 km wide lake in it, depth of the crater – around 150 m. Lonar Lake contains rare and unusual microorganisms.

Hranice Abyss (Hranicka Propast)

Hranice Abyss, Czech Republic

The deepest known underwater cave in the world. The total known depth of this cave is 473.5 m, known depth of the cave lake – 404 m. It is expected that it is much deeper – up to 1200 m deep.

Pozzo del Merro

Pozzo del Merro, Italy

Extremely deep water-filled sinkhole – a cave with at least 392 m deep waterbody, total measured depth – 472 m.

Caño Cristales (Cano Cristales)

Caño Cristales with waterfall and the red Macarenia clavigera, Colombia. September 2012

A unique river. Its bottom is covered with the endemic Macarenia clavigera plants. From late July to November these plants turn bright red. Then this colorful river is one of the most spectacular sights in Colombia.

Kanas Lake Monsters

Two Kanas Lake creatures, China

According to legends in this lake live giant fish or similar creatures that are some 10 – 15 m long. These animals have been caught on video, including an aerial that shows a group of some 15 creatures crossing the lake (2012).