Sistema Ponderosa
Quintana Roo, Mexico
Measurements
| Length | Max depth | Entrances | Source | Date |
|---|---|---|---|---|
| 20,790 m | 20.4 m | Unknown | Facebook Report Primary source Provided by: PURE, OnlyCenotes | 2026-03-15 |
| 15,209.5 m | 20.4 m | Unknown | QRSS Long Underwater Caves PDF Secondary source Provided by: Mayor, Pocobelli | 2014-08-01 |
News
Resurvey of Ponderosa
OnlyCenotes · 2026-03-15
Over the past year, a team of 15 divers, Playa Del Carmen Underwater Resurvey and Exploration (PURE), spent countless hours resurveying the Ponderosa system with the goal of creating a community of like minded individuals who appreciate having navigational aids for their diving and put their surveying skills to use. Previous maps of the systems have grown outdated and attempts to resurvey and generate an asset to the community have failed until now. I want to thank Emőke Wagner for organizing and leading the project and Herwig Hoffmann for spending over 37 hours underwater with me and trusting my crazy dive plans. I am pleased to report that Ponderosa now sits 68,208'/20,790m long with a few odds and ends that could be surveyed with a bit of courage and foolishness. This is a significant increase over the last map published which stood at 49,274'/14,931m. In the process, the cave was extended a mere 2,135'/650m. A significant amount of relining was performed. ...