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| Page | Author | Content | Tag |
| 64-73 | Peter Sprouse | Purificacion: Mexico's Master Cave System | Mexico |
| Page | Author | Content | Tag |
| 294-296 | Peter Sprouse | El Volcán | Mexico |
| Page | Author | Content | Tag |
| 12-15,19 | Peter Sprouse | The Desert Cenote [El Hundido] | Mexico,Chihuahua |