It is located on the eastern coast and southern side of the island (Sør-Jan). It is inside the southwestern part of the bay Rekvedbukta, between Båtvika and Helenesanden. Trollsletta has a length of about 1,400 meters. The coast consists of low and splintered cliffs. Olonkinbyen is located at Trollsletta. The only settlement on Jan Mayen, Olonkinbyen consists of a weather station and the Norwegian Armed LORAN-C station. 
- "Trollsletta (Jan Mayen)". Norwegian Polar Institute. Retrieved 11 August 2013.
- Orvin, Anders K. (1960). "The place-names of Jan Mayen". Skrifter. 120. Norsk Polarinstitutt: 60.
- "Olonkinbyen (Jan Mayen)". Norwegian Polar Institute. Retrieved 11 August 2013.
- Arctic Pilot: Sailing directions Svalbard–Jan Mayen. 7. Stavanger: The Norwegian Hydrographic Service and The Norwegian Polar Institute. 1988. p. 404. ISBN 82-90653-06-9.
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