Current Date: 27 Jan, 2026
{{entry.title}}

Grüner See, The Park That Turns Into A Giant Lake Naturally

There is a place in Austria called Grüner See which is a dry park in winter and turns into a 12-meter-deep lake in summer.

Austria is by far one of the most magical European countries, with breathtaking scenery and natural wonders. Aside from its ski resorts and tall mountain peaks, Grüner See, or Green Lake, is a natural treasure found nowhere else in the world.

This lake, located at the foot of the Hochschwab mountains, does not appear to have any special features. During the winter, the water is no deeper than 6 feet. The nearby park is used for hiking. However, as spring approaches, something unbelievable begins to happen.

As the temperature rises, the lake expands and can reach a depth of 40 feet, covering the entire park’s surface. The site becomes a popular summer destination for divers, who can explore the park directly beneath the water. In addition, the grass at the bottom causes the water to turn a bright green. As you dive into the lake, you’ll notice benches, bridges, and trees that form an impressive underwater landscape.

As winter arrives, the lake returns to its 6-foot-deep depth as if nothing had happened. Regardless of the explanation, this location provides a once-in-a-lifetime experience.

Grüner See, Tragöss, Styria, Austria. Photo by Claudia Domenig/Flickr
Photo by Wolf-Ulf Wulfrolf/Flickr
Photo by mtberger-photography.com
Photo by Anton Zach/Flickr
Photo by mtberger-photography.com
 Photo by SzaboGyul4/Flickr

Related Articles

 Photo by SzaboGyul4/Flickr

Similar Stories
Xiaozhai Tiankeng: Exploring the World’s Deepest and Largest Natural Sinkhole

Xiaozhai Tiankeng: Exploring the World’s Deepest and Largest Natural Sinkhole

Hidden in the rugged terrain of Chongqing, China, lies Xiaozhai Tiankeng—the world’s deepest and largest natural sinkhole. Known as the “Heavenly Pit,” this colossal natural wonder plunges between 511 and 662 meters deep and stretches over 600 meters wide, dwarfing many familiar landmarks. This article journeys into the geological origins, unique ecosystem, and mysterious caverns beneath Xiaozhai Tiankeng, revealing a spectacular glimpse into Earth’s hidden landscapes.

Why Londoners Celebrate No Trousers Day by Riding the Metro Without Pants

Why Londoners Celebrate No Trousers Day by Riding the Metro Without Pants

Every year, Londoners participate in a quirky and joyful tradition known as No Trousers Day, where brave commuters board the London Underground dressed normally but without trousers, pants, or pajamas from the waist down. This cheeky event brings laughter, surprises, and a shared sense of community to the usually dull winter commute, reflecting a playful rebellion against the mundane and a celebration of spontaneity. Discover the origins, spirit, and fun behind London’s beloved No Trousers Tube Ride.

Taal volcano: The Island in a Lake on an Island in a Lake on an Island

Taal volcano: The Island in a Lake on an Island in a Lake on an Island

Lake Taal, on the island of Luzon, in the Philippines archipelago's northernmost reaches, is unique. It's now one of just two lakes in the world with a third-order island within it, with the lake itself being a part of the order. In other words, Lake Taal, which is located on the island of Luzon, has a volcano (Volcano Island), a lake (Crater Lake), and its own little island (Vulcan Point).

How Xico in Mexico Transformed from Volcano to Lake to Farmland

How Xico in Mexico Transformed from Volcano to Lake to Farmland

Xico, located near Mexico City, has a fascinating geological and cultural history that tells a story of transformation—once a violent volcano, then a serene lake, and today a fertile expanse of farmland. This transformation reflects the dynamic forces of nature and human intervention over centuries. This article explores the journey of Xico’s volcanic crater from its fiery origins through its time as a lake and how it ultimately became rich soil supporting agriculture and community life.

The mysterious GIANT spherical stones

The mysterious GIANT spherical stones

Mysterious spherical stones ranging in size from a few millimeters to several meters have been discovered in Crimea, United States, Russia, and New Zealand. There are many theories from various geologists, but none of them are clear.