Home›Landforms of the Biscoe Islands›Extension Reef🌐EnglishEnglishDeutschNederlandsSvenskaEntityQ312996· pop 5· linked from 1 articlesExtension ReefSign in to savelandformOn the mapAvailable in 5 languagesDeutschCebuanoNorwegian NynorskSvenskavia Wikidata sitelinks · CC0Connectionsgeographic coordinate systemEntityreefEntityUnited States Geological SurveyEntityUnited States Department of the InteriorEntityGeographic Names Information SystemEntityBiscoe IslandsEntityJohn RymillEntityBritish Graham Land Expedition (1934-1937)EntityRabot IslandEntityCategoriesLandforms of the Biscoe IslandsReefs of Graham Land