Tarpon Hole (King’s Spring)

Tarpon Hole or King's Spring, Florida

One of the best places to see manatees in nature is King’s Spring or Tarpon Hole – a subaquatic spring in King’s Bay. The spring has an output of 1,213 l/s.

Leppaluði borehole

Leppaluði borehole

Often tourists mix up two hot springs or geysers – the artificial and more active Leppaluði borehole and dormant Grýla – once impressive…

Gainer Springs

Some of the most pristine of the large springs of Florida are Gainer Springs. If one wants to admire this wonder of nature: take a canoe and…

Dagejia Geysers

Dagejia Pohutu geyser

Possibly one of the largest geyser fields in the world reported having some 100 geysers. Dagejia Geyser spouts up to 20 m high and is the largest geyser in Tibet.

Troy Spring

Troy Spring

One of the most beautiful great springs in Florida. Troy Spring contains remnants of a steamship that was sunken in 1863, during the Civil War.

Kalarskiy Geyser

Kalarskiy Geyser is a small geyser, or, rather intermittent thermal spring in remote, beautiful area of Siberia. Fountain is some 0.2 – 0.5 m high.

Weeki Wachee Springs

Weeki Wachee stream below the springs, Florida

Large spring, coming from a cave. The explored depth of cave is 124 m and thus it is the deepest freshwater filled cave in the United States. Explored length of passages – 7,260 m. Unique underwater theater – mermaid show – operates here since 1947.

Aouk-Kladuk Underground River

Kladuk River in the Kladuk Abyss

World’s most powerful underground river. Aouk-Kladuk Underground River is some 1.5 kilometres long. The stream has a volume of 130 – 180 cubic meters.

Ikaite tufa columns in Ikka Fjord

Ikaite columns in Ikka Fjord, Greenland

Almost unique phenomenon – submarine tufa columns created by cold seeps from submarine springs. Columns are formed of ikaite – an unstable mineral that disintegrates in temperatures above 6 – 7 ° C. In total there are more than 600 such columns up to 18 m tall.

Usterling Growing Rock (Johannisfelsen)

Usterling Growing Rock, Bavaria

Almost unique natural landmark – a naturally formed tufa wall with a stream flowing along its upper rim and depositing further extension to this cliff. Wall is some 40 – 50 m long and up to 5.4 m tall.