Indonesian volcano (8)
I believe the answer is:
krakatoa
'indonesian volcano' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for krakatoa that I've seen before include "'Small volcanic Indonesian island, between Java and Sumatra (8)'" , "major disaster, naturally" , "Volcano that famously exploded in 1883" , "Volcanic Indonesian island that erupted violently in 1883" , "Indonesian volcanic island with a massive eruption in 1883" .)