- FundoMG 146 - W.O. Kupsch fonds
- SérieJ. Audio-Visual Materials
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- ItemWOK 10-124 - Mud crater close up; Namafjall solfatara area
- ItemWOK 10-125 - General view of mud crater. Namafjall solfatara area
- ItemWOK 10-126 - Mud craters and mud cones. Namafjall solfatara area
- ItemWOK 10-127 - Hot springs of Namafjall solfatara area
- ItemWOK 10-128 - Steam escaping from drilled hole in Namafjall solfatara area
- ItemWOK 10-129 - Drill hole with casing and pipe to gathering area, Namafjall solfatara area
- ItemWOK 10-130 - Sulfur deposited by hot springs at Namafjall solfatara area
- ItemWOK 10-131 - Small cone deposited by hot spring, Namafjall
- ItemWOK 10-132 - Pillow lavas, hydrothermally altered, near Namafjall
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