Kawah Ijen crater within the Ijen caldera is noted for its deposits of sulfur. Large blocks of the elementally pure sulfur are broken off with hammers and carried laboriously out of the crater in baskets before being transported to a sulfur mill on the SE flank of the caldera.

Copyrighted photo by Katia and Maurice Krafft, 1971.

Copyrighted image used with permission. All Rights Reserved. Contact photographer for any usage requests.

Ijen