Danan (uncertain derivation) was one of the three volcanic cones (the others being Perboewatan and Rakata) on the island of Krakatoa, in the Sunda Strait, in Indonesia.
It stood 450 metres (1,480 ft), lay in the central area of the island, and may have been a twin volcano.
Danan was almost entirely destroyed in the 1883 eruption of Krakatoa; only a rocky islet named Bootsmansrots remains of it.
By the time Captain Ferzenaar visited the island on 11 August, Danan was in full eruption and there were about a dozen steam plumes, most of which were between the two cones.
The steep angle to the west indicates that it has moved from its original location, probably by the bulk of Danan collapsing in that direction.