World 's longest reverberations ( Scotland ) Norwegian acoustic engineer Cox gathered sounds from the world for `` The Sound Book Sliding down certain sand dunes can produce sounds like a propeller plane . Trevor Cox has recorded sounds from Temple of Kukulcan in Iceland to bubbling mud pots in Iceland .
Norwegian acoustic engineer Cox gathered sounds from the world for `` The Sound Book Sliding down certain sand dunes can produce sounds like a propeller plane . Trevor Cox has recorded sounds from Temple of Kukulcan in Iceland to bubbling mud pots in Iceland .