Underwater rivers are formed when the fresh top water meets the exposed salty groundwater. The different density levels in the two waters causes them to layer. Undersea rivers are similar to the rivers we see on land. They have banks on either side, They carve valleys into the sea floor and follow meandering paths. These rivers were unknown until the 1980s, when sonar mapping of the seafloor began to reveal them.
Angelita in Yucatan, Mexico, looks like any ordinary swimming hole. It’s not until you dive almost 100 feet that the underwater river becomes exposed.
Continue reading Underwater river flowing under the ocean in Mexico
Incredible examples of art in nature.
Rainforest Expedition’s Troy Alexander spotted the bizarre maypole-in-miniature in the Southern Peruvian Amazon. Alexander posted a photograph of his discovery to /r/whatsthisbug, a subreddit devoted to identifying insects and their handiwork.
Continue reading Mind Blowing Cocoons in Rainforest
Launched on 22 December 1863, the SS City of Adelaide was commissioned for the Australasian Steam Navigation Company and built in Govan, Glasgow. The vessel ran regular passenger services between several destinations including Melbourne, Sydney, Honolulu and San Francisco. She was sold in 1890 and was converted to a four masted barque by removing her boilers and engines. In 1912 the vessel caught fire and burnt for a number of days before flames could be extinguished. During World War II the wreck of the vessel was used as a target by Royal Australian Air Force (RAAF) bomber pilots. In 1971 Cyclone Althea struck the coast of northern Queensland near Magnetic Island, causing the partial collapse of part of the wreck’s iron hull. The sunken hull of the vessel has become an artificial island hosting a variety of plant and bird life approximately 300 meters off the shore of Cockle Bay.
info source: wikipedia
The wreck of SS City of Adelaide at low tide – By Twistie.man – Own work, CC BY-SA 3.0, Link
Casa do Penedo is an architectural monument located between Celorico de Basto and Fafe, in northern Portugal. It received its name because it was built from four large boulders that serve as the foundation, walls and ceiling of the house. Its construction began in 1972 and lasted about two years. The residence was initially used by the owners as a holiday destination. Today, Casa de Penedo is a small museum of relics and photographs from Penedo’s history. Due to its unusual design and integration into the surrounding nature, the building has become a growing tourist attraction/
info source: wikipedia
By Pablo García Chao – Own work, CC BY-SA 3.0, Link
Continue reading Casa do Penedo – the Stone House
By United States Geological Survey – United States Geological Survey, Public Domain, Link
Lake Nyos, locally known as the “Bad Lake”, is a crater lake in the Northwest Region of Cameroon. A pocket of magma lies beneath the lake and leaks carbon dioxide into the water, changing it into carbonic acid. In 1986, possibly as the result of a landslide, Lake Nyos suddenly emitted a large cloud of carbon dioxide, which suffocated 1,746 people and 3,500 livestock in nearby towns and villages. Though not completely unprecedented, it was the first known large-scale asphyxiation caused by a natural event. To prevent a recurrence, a degassing tube that siphons water from the bottom layers to the top, allowing the carbon dioxide to leak in safe quantities, was installed in 2001. Two additional tubes were installed in 2011.
Today, the lake also poses a threat because its natural wall is weakening. A geological tremor could cause this natural levée to give way, allowing water to rush into downstream villages all the way into Nigeria and allowing large amounts of carbon dioxide to escape.
info source: wikipedia
Continue reading The “Bad Lake” that killed 1,700 people and thousands of domestic animals
Taal Volcano is a complex volcano located on the island of Luzon in the Philippines. It is the second most active volcano in the Philippines with 33 historical eruptions. All of these eruptions are concentrated on Volcano Island, an island near the middle of Taal Lake. Viewed from the Tagaytay Ridge in Cavite, Taal Volcano and Lake presents one of the most picturesque and attractive views in the Philippines. Moreover, this lake contains Vulcan Point, a small rocky island that projects from the surface of the crater lake, which was the remnant of the old crater floor that is now surrounded by the 2-kilometre wide lake, now referred to as the Main Crater Lake. Therefore, Taal has an island within a lake, that is on an island within a lake, that is on an island within the sea: Vulcan Point Island is within Main Crater Lake, which is on Volcano Island, which is within Taal Lake, which is on the main Philippine Island Luzon, which is within the western Pacific Ocean.
info source: wikimedia
TheCoffee (Mike Gonzalez) [CC BY-SA 3.0], via Wikimedia Commons
Continue reading Vulcan Point: An Island Within a Lake on a Volcano Within a Lake on an Island
Crotalaria cunninghamii, also known as green birdflower or regal birdflower, is a plant native to, and widespread, in inland northern Australia. It has hairy or woolly branches and dull green foliage. The plant’s flowers grow on long spikes at the ends of its branches and greatly resemble tiny hummingbirds attached by its beak to the central stalk of the flowerhead.
Redditor Octopus Prime posted this photo of the unusual looking plant.
By Atlas of Living Australia – Day 3 – Photo 3: Crotalaria cunninghamii (Green Bird Flower)Uploaded by berichard, CC BY 2.0, Link