Better yet, this iteratively deepening list of land-lake layers: https://en.wikipedia.org/wiki/Lake_island#Islands_within_lakes_recursively https://en.wikipedia

Better yet, this iteratively deepening list of land-lake layers: https://en.wikipedia.org/wiki/Lake_island#Islands_within_lakes_recursively https://en.wikipedia.org/wiki/Lake_island#Islands_within_lak... This culminates in: The largest island in a lake on an island in a lake on an island is a nameless, approximately 4.0-hectare (10-acre) island at 66.687°N 70.479°W, situated within Nettilling Lake on Baffin Island, Canada.`