Rainbow Eucalyptus Trees, Hawaii
The unique multi-hued bark is the most distinctive feature of the tree. Patches of outer bark are shed annually at different times, showing a bright green inner bark. This then darkens and matures to give blue, purple, orange and then maroon tones.
Photo by Jean Paul Ferrero (via Exposing the Truth)
Lake Hillier, Australia
The source of the pink colour has not been definitively proven. It is noted that the colour is permanent, and does not alter when the water is taken in a container.
Giant Crystal Cave, Mexico
The Naica Mine 300 metres (980 ft) below the surface in Naica, Chihuahua, Mexico. The main chamber contains giant selenite crystals, some of the largest natural crystals ever found. The cave’s largest crystal found to date is 12 m (39 ft) in length, 4 m (13 ft) in diameter and 55 tons in weight.
Green flashes and green rays are optical phenomena that occur shortly after sunset or before sunrise, when a green spot is visible, usually for no more than a second or two.
In very cold weather, when ice crystals are suspended in the atmosphere, light pillars may form in the sky. The light pillars form around natural light sources, like the setting sun or moon, but can also be created by man-made light. The ice crystals serve to reflect light back at us and, as we cannot see the crystals, trick us into believing there is a pillar of light in the sky. The higher the ice crystals, the taller the light pillar will appear.
The Blood Falls, Antarctica
Blood Falls is an outflow of an iron oxide-tainted plume of saltwater, flowing from the tongue of the Taylor Glacier onto the ice-covered surface of Eastern Antarctica. Iron-rich hypersaline water sporadically emerges from small fissures in the ice cascades. The saltwater source is a subglacial pool of unknown size overlain by about 400 m of ice at several km from its tiny outlet at Blood Falls.
A dirty thunderstorm (also, Volcanic lightning) is a weather phenomenon that occurs when lightning is produced in a volcanic plume.
Mammatus, also known as mammatocumulus (meaning “mammary cloud” or “breast cloud”), is a meteorological term applied to a cellular pattern of pouches hanging underneath the base of a cloud. The name mammatus is derived from the Latin mamma (meaning “udder” or “breast”).
An aurora is a natural light display in the sky particularly in the high latitude (Arctic and Antarctic) regions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere (thermosphere). The charged particles originate in the magnetosphere and solar wind and, on Earth, are directed by the Earth’s magnetic field into the atmosphere.
Sailing stones, sliding rocks, and moving rocks all refer to a geological phenomenon where rocks move and inscribe long tracks along a smooth valley floor without human or animal intervention.