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Toba Caldera is one of twenty geoparks in Indonesia, [2] and was recognised in July 2020 as one of the UNESCO Global Geoparks. [3] [4] [5] Lake Toba is the site of a supervolcanic eruption estimated at VEI 8 that occurred 69,000 to 77,000 years ago, [6] [7] [8] representing a climate-changing event.
The government announced that the search would be stopped on 3 July. The reason is that the agency had found difficulties because Lake Toba's depth is more than 450-metre (1,480 ft) while at this time the agency only can search up to 200-metre (660 ft). The victims' families had said that they were already letting go of their relatives. [36]
To turn Lake Toba into a top tourism spot, the agency requires a budget of 21 trillion Rupiah (US$1.3 billion). [ 5 ] The BPODT's exercise of authority has faced significant criticism by indigenous communities who raised concerns about being excluded from the development process, viewing the agency's projects as unilateral decisions not taking ...
Toba ash records have not been identified in ice core samples. However, four sulfate events in the ice strata are proposed to represent the deposition of aerosols from the Toba eruption. [ 50 ] [ 32 ] [ 51 ] One sulfate event at 73.75–74.16 kyr, which has all the characteristics of the Toba eruption, is among the largest sulfate loadings that ...
Samosir, or Samosir Island, is a large volcanic island in Lake Toba, located in North Sumatra Province on the island of Sumatra in Indonesia. Administratively, Samosir Island is governed as six of the nine districts within Samosir Regency. The lake and island were formed after the eruption of the Toba supervolcano some 75,000 years ago. [2]
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Lake Sidihoni is a lake located within Samosir Island which itself is an island within Lake Toba, in North Sumatra, Indonesia and is therefore notable for being a "lake on an island in a lake on an island".
Mikimoto Pearl Island from the Toba castle grounds. In 1893, Mikimoto Kōkichi , a local entrepreneur, succeeded in producing cultured pearls on an island in Ise Bay called Ojima ( 相島 ) . In 1919, the island was sold by the town of Toba to Teikoku Kisen Shipping Company but was purchased back by Toba in 1927.