hypsographic feature
type: Concept
narrower: atoll(s)
preferred label: maastokohde @fi

atoll(s)
type: Concept
broader: coastal landform
broader: hypsographic feature
in scheme: conceptscheme
note: a ring-shaped coral reef which has closely spaced islands on it encircling a lagoon
preferred label: atolli @fi

coastal landform
type: Concept
narrower: atoll(s)
preferred label: rantamuodostuma @fi