1. Cup and ball basalt, Jökulsá below Dettifoss Collection: Icelandic and Faroese Photographs of Frederick W.W. Howell Location: Jökulsá á Fjöllum, Iceland Dettifoss, Iceland Date: ca. 1900 Format: Image Creator: Howell, Frederick W. W.
2. Basalt at Hljóðaklettar, near Dettifoss Collection: Icelandic and Faroese Photographs of Frederick W.W. Howell Location: Dettifoss, Iceland Hljóðaklettar, Iceland Date: ca. 1900 Format: Image Creator: Howell, Frederick W. W.
3. Dettifoss Collection: Icelandic and Faroese Photographs of Frederick W.W. Howell Location: Dettifoss, Iceland Date: ca. 1900 Format: Image Creator: Perkins, Henry A.
