Burning coal seam. Fort Union formation
Burning coal seam. Fort Union formation
Excavated watertank in front of temple at Mohenjo Daro, Indus Valley
Excavated watertank in front of temple at Mohenjo Daro, Indus Valley
Diagram of Oil seep on homocline
Diagram of Oil seep on homocline
University of Saskatchewan
University of Saskatchewan
The South Saskatchewan River
The South Saskatchewan River
The South Saskatchewan River
The South Saskatchewan River
The South Saskatchewan River
The South Saskatchewan River