An island in a lake, on an island, in a lake, on an island. Real places, seen from space, one level deeper each step.
The map stays yours: pan and zoom any time.
Chains and coordinates follow Wikipedia's "Recursive islands and lakes" catalogue, cross-checked against the sources below. "Largest" and "deepest" mean within that community-maintained catalogue, not a surveyed record.
Satellite imagery: EOxCloudless Sentinel-2 mosaics by EOX (2016 and 2021 vintages, labeled on screen) and, for the US stop, USGS The National Map (public domain). Mosaics are blends of a year's passes, not a photo of today.
Taal's crater changed in the January 2020 eruption; that chapter compares the 2016 and 2021 mosaics on the map. Nothing here is stored; the tour is the whole app.