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The volcano has a 4 by 4.8 km (2.5 by 3.0 mi) wide caldera, and a single crater lake, Wonchi lake, about 450 m (1,480 ft) below the rim of the volcano. Study of Wonchi's caldera is incomplete; initial findings show it could be as much as 900 m (3,000 ft) deep, and the lake itself could be as deep as 400 m (1,300 ft).
The crater is almost a mile across and has its own micro climate. Sheltered from the winds that wet most of the rest of the island, figs and vines flourish at Rano Kau. [1] The inner slope was the site of the last toromiro tree in the wild until the specimen was chopped down for firewood in 1960. Crater lake of Rano Kau, with Orongo at far right
The crater was clearly changed by the eruption. A grey field of ash surrounds the crater and the caldera itself seems larger and deeper. The crater lake, which formed after Karthala's last eruption in 1991 and once dominated the caldera, is now gone completely. In its place were rough, dark grey rocks, possibly cooling lava or rubble from the ...
The crater lake of Mount Rinjani, Indonesia Lake Yeak Laom, Cambodia Baengnokdam crater lake of Hanla Mountain in winter, South Korea A volcanic crater lake is a lake in a crater that was formed by explosive activity or a collapse during a volcanic eruption .
Following the eruption, thousands of fumaroles vented steam from the ash, creating the Valley of Ten Thousand Smokes. In 1919, geologists noted a lake covering a large part of the caldera floor. By 1923 the lake was gone and numerous fumaroles, mud pots, and a large mud geyser had replaced it. The lake has since refilled to a depth of over 800 ...
The central volcano of the group includes several lava domes and a tuff cone, Goshiki-dake, which contains a crater lake named "Okama". Also known as the "Five Color Pond" (五色沼, goshiki numa) because it changes color depending on the weather, it lies in a crater formed by a volcanic eruption in the 1720s. The lake is 360 metres (1,200 ft ...
Oregon's Crater Lake is the deepest lake in America and has crystal-clear waters. But it didn’t used to be a lake at all. This gorgeous lake was once a mountain.
The peak is topped by a 1-kilometre (0.6 mi) wide summit crater, which contained a shallow crater lake until 1959. As of 2006, the crater lake had re-formed. [3] The last verified eruptions from the volcano were about 1,800 years ago, while reports of possible eruptions in 1692 and 1843 are considered uncertain. [1]