Den sidste formodede observation ledte Lauge Koch til at lave en flyekspedition fra Spitsbergen i 1938 som ikke fandt spor af øen.<ref name="exp">{{cite web | title = Exploration history of northern East Greenland | publisher = Geological Survey of Denmark | url = http://www.geus.dk/DK/publications/geol-survey-dk-gl-bull/21/Documents/nr21_p017-116.pdf | accessdate = 29. august 2016 | work = Geological Survey of Denmark and Greenland Bulletin 21 - 2010 Exploration history and place names of northern East Greenland | author = Anthony K. Higgins | page = 49 | archive-date = 19. august 2016 | archive-url = https://web.archive.org/web/20160819155021/http://www.geus.dk/DK/publications/geol-survey-dk-gl-bull/21/Documents/nr21_p017-116.pdf | url-status = ok }}</ref> Observationen af [[Ivan Papanin]] i 1937 var også en hovedfaktor ved dannelse af [[Grønlandsekspeditioner|Mørkefjordsekspeditionen]] i 1938–1939 ledet af [[Eigil Knuth (billedhugger)|Eigil Knuth]] og [[Ebbe Munck]].<ref name="exp"/>
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