A | upper most entrance to the shaft 18m above the main chamber floor | ||
B | high entrance 12m above the main chamber floor | ||
TS | terminal shaft, reached by descending natural passage (depth shown in metres below foot of scaffolding on main chamber floor) |
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areas under excavation | U | upper cutting |
L | lower cutting | ||
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cave wall at floor level | ||
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high entrances | ||
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terminal shaft | ||
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scaffolding tower, built up in offset stages | ||
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stalactites | ||
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breccia around uppermost entrance |