| 0 | Six Held Tones for the Geodetic Arc |
| 0 | Six Held Tones for Svartifoss |
| 0 | Six Held Tones for the Great Blue Hole |
| 0 | Six Held Tones for the Mirror Wall |
| 0 | Six Held Tones for the Antikythera Shipwreck |
| 0 | Six Held Tones for Fengxian |
| 0 | Six Held Tones for the Oak Island Pit |
| 0 | Six Held Tones for the Octagon Earthworks |
| 0 | Six Held Tones for Titanpointe |
| 0 | Six Held Tones for the Porter Creek Bridge |
| 0 | Six Held Tones for the Almaden Tower |
| 0 | Six Held Tones for the Unfinished Obelisk |