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| Type | Title | Author | Replies | Last updated |
|---|---|---|---|---|
| Forum topic | Incas, mystery of interlocking walls | aquarius | 5 | 4 months 2 weeks ago |
| Forum topic | Stone softening | Open mind 2 | 22 | 1 year 6 months ago |
| Type | Title | Author | Replies | Last updated |
|---|---|---|---|---|
| Forum topic | Incas, mystery of interlocking walls | aquarius | 5 | 4 months 2 weeks ago |
| Forum topic | Stone softening | Open mind 2 | 22 | 1 year 6 months ago |