Things to find in Puerto Rico

What the map holds here

• Arecibo Observatory Legend
  They found a sinkhole the right shape and built a radio telescope in it: a 305 metre spherical reflector made of 38,778 perforated aluminium panels, each about 3 by 7 feet, started in September 1960 and opened on 1 November 1963....
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• Río Camuy Cave Park, Puerto Rico Cave
  The Camuy is the third largest underground river in the world and it has been cutting this limestone for a very long time. Explorers have mapped over ten miles of passage, 220 caves and 17 entrances so far, and the guess is that...
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Every one of these is sourced

Each entry links to the record it came from. Access rules, permits and land status vary by country and are noted where the source states them, check locally before you go.