1956 Klerksdorp Sphere Reports
- Date of account
- Reported in the 1950s; artefacts often dated much earlier
- Location
- Klerksdorp and Ottosdal, North West Province
- Source
- model_recalled_reference
- Record updated
- 2026-10-10
Record summary
The Klerksdorp or Ottosdal spheres are geological concretions and museum objects that have been promoted in alternative literature as technologically anomalous or prehistoric artefacts. They are relevant to UAP research because the controversy shows how ordinary geological specimens can be detached from their context and recast as evidence of ancient visitation. Geological explanations generally identify them as pyrophyllite concretions or related formations, with surface markings produced naturally. Their alleged age and artificiality should not be inferred from exhibition labels or popular documentaries.
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