Linked from
The 6 pages that link to Santorini, each with the reason it gives.
PumiceRelated: Santorini’s volcanic deposits include pumice from large explosive eruptions.
CycladesBroader topic: Its dramatic volcanic landscape distinguishes the southern Cyclades.
Santorini calderaNarrower topic: The caldera is the defining geological feature of the archipelago.
Minoan eruptionRelated: Santorini is the modern name for the island group affected by the eruption.