Greatest Extinction of All Time. Vast deserts covered western Pangea during the Permian as reptiles spread across the face of the supercontinent. of all life perished during the extinction event that marked the end of the Paleozoic Era.
Overlooking Bwindi Impenetrable Forest National Park, western Uganda and DR Congo border. Home of the mountain gorillas. ********************************* I went gorilla tracking here and also in Volcanoes National Park of Rwanda. One of the greatest adventures and experiences in my life. ********************************* #gorillaroadtrip #africa #gorillatracking #bwindi
The Avachinskaya volcano group consists of a NW-SE-trending chain of stratovolcanoes north of Petropavlovsk. Seen here from the western outskirts of the city, 3456-m-high Koryaksky volcano is on the left, 2741-m-high Avachinsky at the right center, and 2189-m Kozhel volcano at the extreme right. Koryaksky has had only a few minor eruptions during historical time, but Avachinsky is one of Kamchatka's most active volcanoes.
Incandescent rockfalls accompanying slow growth of the summit lava dome descend from beneath a cloudcap covering the summit of Merapi volcano in this 1993 nighttime view. Periodic collapse of Merapi's lava dome has produced pyroclastic flows down the western and southern flanks that have devastated populated areas and agricultural lands.
Cerro Negro, the unvegetated cinder cone at the left center, was born on April 13, 1850 on an uninhabited plain between Las Pilas (in the background) and Rota volcanoes. The new cone reached a height of 50-60 m in ten days, after which activity subsided until renewing on May 27. The tephra-mantled lava flow in the middle of the photo, extending from the western base of the cone to the forest in the foreground, was erupted in 1850.
The prominent caldera in the center of the photo is Nemrut Dagi, the westernmost of a group of volcanoes near Lake Van. Nemrut Dagi lies north of the western part of Lake Van and is the only one of the group that has erupted in historical time. The 9 x 5 km caldera is partially filled by a lake, which appears as the smooth snow-covered right-hand side of the caldera floor in this near-vertical Space Shuttle photo with north to the bottom.
The beautifully symmetrical Mount Cleveland forms the western half of Chuginadak Island. The 1730-m stratovolcano is one of the most active volcanoes of the Aleutian Islands. This July 24, 1994, view from the west shows the summit region darkened by ashfall that may have originated from an eruption reported on May 25. Dark lava flows from earlier eruptions can be seen on the flanks of the volcano.
The abandoned scoria quarry in the foreground reveals the core of the volcanic cone at Mt Elephant in Derrinallum (Victoria, Australia). The erupted lava breached the cone at the left. (Credit: Don Fuchs/Australian Geographic)
La Soufrière volcano, the highest in the West Indies, is a complex stratovolcano that dominates the southern end of Basse-Terre, the western half of the butterfly-shaped island of Guadeloupe. A steam-and-ash column rises above the summit in this October 1976 view from the NE at Pointe-a-Pitre, on the isthmus connecting the island segments. The peak at the left (above the sailboat), l'Echelle, is a young cinder cone; the summit itself is a 500-year-old lava dome, and remnants of older…