Other articles where vertical shaft is discussed: cave: Geomorphic characteristics of solution caves: Vertical shafts, by contrast, are controlled by the hydraulic forces of freely flowing water. They are often nearly perfect cylinders with circular cross sections. The walls are vertical and cut across the limestone beds with complete disregard for angle or composition of the beds. Vertical…
Vertical natural cave shaft or pothole in limestone, filled with ancient glacial sediment and then truncated by quarrying Stock Photo - Alamy
Vertical cave shaft hi-res stock photography and images - Alamy
Small-diameter vertical shafts constructed in the shallow space of steep mountainous areas - ScienceDirect
The Virtual Cave: Karst
Research on the Technology of Plugging Gushing Water in the Vertical Shaft under Complicated Conditions
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8.2 Mining and Ore Processing – Environmental Geology
File:Domepit (vertical shaft) (Edwards Avenue, Great Onyx Cave, Flint Ridge, Mammoth Cave National Park, Kentucky, USA) 1 (8313153777).jpg - Wikimedia Commons
Shaft cave hi-res stock photography and images - Alamy
Shaft sinking 1