Recursive islands and lakes

A recursive island or lake is an island or lake that is itself within an island or lake.[1]

Recursive islands

Islands in lakes
Main article: Lake island
Idjwi, in the central-southern region of Lake Kivu
RankIsland In lake CountrySize (km2)
1[1][2]Manitoulin Island Lake Michigan–Huron Canada2,766
2René-Levasseur Island Manicouagan Reservoir Canada2,020
3Olkhon Island Lake Baikal Russia730
4Isle Royale Lake Superior United States535
5Ukerewe Island Lake Victoria Tanzania530
6St. Joseph Island Lake Michigan–Huron Canada365
7Drummond Island Lake Michigan–Huron Canada347
8Idjwi Lake Kivu Congo340
9Ometepe Lake Nicaragua Nicaragua276
Zapatera Lake Nicaragua Nicaragua

Islands in lakes on islands
Samosir is in the middle of Lake Toba.
RankName In lake On island CountrySize (km2)
1[1]Samosir[note 1] Lake Toba Sumatra Indonesia630
Gatter Island Lake Hazen Ellesmere Island Canada
Glover Island Grand Lake Newfoundland Canada178
Volcano Island[4] Lake Taal Luzon Philippines
Pomona Island Lake Manapouri South Island New Zealand

Islands in lakes on islands in lakes
RankNameIn lakeOn islandIn lakeCountrySize (km2)coordinates
1[1]Treasure IslandLake MindemoyaManitoulin IslandLake Michigan–HuronCanada0.4445°45′50″N 82°10′41″W
Kakawaie IslandLake KagawongManitoulin IslandLake Michigan–HuronCanada48°00′05″N 088°47′50″W
Ryan Island[5]Siskiwit LakeIsle RoyaleLake SuperiorUnited States48.0098831°N 88.7709104°W / 48.0098831; -88.7709104
unnamed islandsecond lakeDrummond IslandLake Michigan–HuronUnited States
Small Islands[6]Mackaysee LakeChambers IslandGreen Bay, Lake MichiganUnited States

Islands in lakes on islands in lakes on islands
Nameless isle within Victoria Island in Nunavut Territory in Canada.[7]
RankName In lake On islandIn lake On island Country Size (km2) Coordinates Comment
1 Small islet Not specified Not specifiedNettilling Lake Baffin Island Canada 0.04 66.687361°N 70.479923°W / 66.687361; -70.479923 There are more islands in lakes on the 'level 2' island in Nettling Lake.
2[1][8][9]Small islet Not specified Not specifiedNot specified Victoria Island Canada 0.016 69.792259°N 108.240536°W / 69.792259; -108.240536 The sometime cited name Inception Island is not an official name
3 Small islet Not specified Glover IslandGrand Lake Newfoundland Canada 0.01 48.796848°N 57.65785°W / 48.796848; -57.65785 There are several (at least seven) other, even smaller, islets in the lake

Until 2020,[10] Vulcan Point was an island that existed in Main Crater Lake on Volcano Island in Lake Taal on Luzon in the Philippines.[11] Main Crater Lake evaporated during the 2020 Taal Volcano eruption.[10]

Recursive lakes
Lake Alaotra region, Madagascar

Lakes on islands
RankName On island CountrySize (km2)
1[1] Nettilling Lake Baffin Island Canada 5,542
Lake Alaotra Madagascar Madagascar 900
Tourists on Laguna del Volcan Maderas on Ometepe Island in Lake Nicaragua

Lakes on islands in lakes
RankNameOn islandIn lakeCountrySize (km2)coordinates
1[1]Lake ManitouManitoulin IslandLake Michigan–HuronCanada106
Shara-Nur[12]Olkhon IslandLake BaikalRussia
Siskiwit LakeIsle RoyaleLake SuperiorUnited States16.848°00′05″N 088°47′50″W
Lake Desor[13]Isle RoyaleLake SuperiorUnited States47.976825°N 88.986997°W / 47.976825; -88.986997
Lake Richie[14]Isle RoyaleLake SuperiorUnited States48.0438067°N 88.6953596°W / 48.0438067; -88.6953596
Lake MindemoyaManitoulin IslandLake Michigan–HuronCanada45.762°N 82.209°W / 45.762; -82.209
Lake KagawongManitoulin IslandLake Michigan–HuronCanada
fox lagoonPelee islandLake ErieCanada
Laguna del Volcan Maderas[15]OmetepeLake NicaraguaNicaragua
Laguna de Zapatera[16]ZapateraLake NicaraguaNicaragua
Antoniyevskoye LakeValaamLake LadogaRussia

Lakes on islands in lakes on islands
RankName On island In lake On island CountrySize (km2) Coordinates
1 Unnamed Unnamed Nettilling Lake Baffin Island Canada 1.55 66.387392°N 69.644737°W / 66.387392; -69.644737
2 Unnamed Glover Island Grand Lake Newfoundland Canada 1.40 48.802486°N 57.661476°W / 48.802486; -57.661476

Hoaxes

Moose Boulder was claimed to exist in the seasonal pond of Moose Flats on Ryan Island in Siskiwit Lake on Isle Royale in Lake Superior in the United States,[17] making it a fourth order island. In 2020, it was shown not to exist.[18]

See also

Notes
  1. Was a peninsula until 1906 when a canal was dug, separating it from the mainland.[3]

References
  1. Records, Guinness World (August 28, 2018). 2019 Guinness World Records. pp. 40–41. ISBN 978-1-912286-43-0.
  2. January 2012, Natalie Wolchover 24. "World's Largest Island-in-a-lake-on-an-island-in-a-lake-on-an-island Seen on Google Earth". livescience.com.
  3. "Samosir Island - Everything you Need to Know about Samosir Island".
  4. "Volcano Island | volcano, Philippines". Encyclopedia Britannica.
  5. "GNIS Detail - Ryan Island". geonames.usgs.gov.
  6. "Islands within Chambers Island's Lake Mackaysee Now Protected by Door County Land Trust". November 8, 2018.
  7. "Island in a Lake on an Island in a Lake on an Island". earthobservatory.nasa.gov. February 22, 2015. Retrieved March 13, 2020.
  8. "An Island in a Lake on an Island in a Lake on an Island". Atlas Obscura. Retrieved March 12, 2020.
  9. Jennings, Ken (January 24, 2012). "Ken Jennings Finds One More Thing Canada Has That No One Else Does". Condé Nast Traveler. Retrieved March 13, 2020.
  10. Freedman, Andrew; Meko, Tim; Karklis, Laris (January 17, 2020). "Taal volcano's crater lake is nearly empty". Washington Post.
  11. "Some interesting islands and lakes". Topografisch Verbond Elbruz. Archived from the original on September 19, 2013. Retrieved February 1, 2014.
  12. "Shara-Nur lake". BaikalNature Tour Operator. May 11, 1975. Retrieved March 13, 2020.
  13. "GNIS Detail - Lake Desor". geonames.usgs.gov.
  14. "GNIS Detail - Lake Richie". geonames.usgs.gov.
  15. Valenzuela, Orlando. "Puerta laguna misteriosa [Door to mysterious lagoon]". El Nuevo Diario (in Spanish).
  16. "Global Volcanism Program | Zapatera". Smithsonian Institution | Global Volcanism Program.
  17. "Largest island on the largest lake in the world". Albert Lea Tribune. July 21, 2009. Retrieved March 13, 2020.
  18. Taub, Matthew (March 10, 2020). "The Intrepid Mother and Son Who Unraveled a Geographic Hoax". Atlas Obscura.
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